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A 13½IN. RADUIS VERNIER OCTANT, CIRCA 1800with ebony T-frame, inset ivory scale divided to 95°, brass index arm bearing inscription Gilbert London, pinhole sight, mirrors and three shades and brass pad feet, contained within oak stepped keystone case -- 18in. (46cm.) wide; together with a 9½in. radius example by J. Walker, London, circa 1815(2)First example lacking pencil and note plaque behind, crack to left-hand arm, missing arm restrainer, inscription presumed modern, case held together with tape. Second: no case, secondary mirror lacks silvering and both lack top plate, missing pencil. Main scale possibly associated.

A 9½IN. RADIUS VERNIER OCTANT BY THOMAS HARRIS, LONDON, CIRCA 1810the ebony 'T' frame with ivory scale divided to 105º, lacquered brass vernier signed Thos. Harris, London, pinhole sight with swivel filter, three shades, mirrors, pencil finial and noteplate, contained in stepped wooden case with trade label for Mathieson, Leith -- 11½in. (29cm.) wide scale lifting on left (glue failing), no pencil (only finial).

AN EXCEPTIONAL 8IN. RADIUS VERNIER SEXTANT BY WILLIAM DOLLOND, LONDON, CIRCA 1860the lacquered brass and partially oxidised T-frame retaining most of its original finish, the arc signed Dollond London and inscribed Silver above '70' with inset scale divided to 145°, vernier with magnifier on horizontal tangent screw adjustment, and glass light diffuser, braced index arm, mirrors and seven shades on oxidised frame section, handle with stand clamp accessory and three pin feet, contained within fitted keystone box of issue with complete accessories including five eyepieces, filter and pin, with maker's label inside lid, and securing hook -- 14in. (36cm.) diamExcellent condition throughout.

A 7½IN. RADIUS DOUBLE-FRAMED SEXTANT BY CHARLES SHEPHERD, LONDON, CIRCA 1850with oxidised brass 'T' frame, brass arc signed Shepherd, Leadenhall St. London, inset silvered scale divided to 110º, braced index arm with vernier and magnifier, two mirrors, seven shades, pin feet and ribbed ebony handle, contained in box with four sighting tubes -- 13in. (33cm.) wideCharles Shepherd worked from 53 Leadenhall St between 1846-1858. Frame dusty;

A DOMESTIC BAROMETER BY E. TOTTENHAM, DUBLIN, CIRCA 1900the ivorine scale signed E. Tottenham, 38 College Green, Dublin, with vernier scale and thermometer, mercury tube, adjusting knob and suspension loop - 38in. (96.5cm.) highGood overall condition.

A Mahogany Bow Fronted Stick Barometer, signed Dodd, Glasgow, circa 1840, concealed mercury tube with a silvered single vernier scale dial signed, thermometer box, turned cistern cover, 99.5cm highCase is faded, pediment with some chips and losses, front of the case with signs of old touch-up repair marks and cracks to the veneers in parts, case with chips in parts, some beading around the thermometer box is loose and the glass is slightly loose, cistern cover is later, base is slightly loose, mercury is visible in the tube.

I* A Mid 19th Century Mahogany Cased Stick Barometer and Thermometer by J. Cattaneo of Folkestone, with engraved ivory scale and vernier and alcohol thermometer, contained in plain mahogany case with moulded pediment and moulded edge, and with exposed cistern, 39.5ins highCondition ReportThe mercury tube and alcohol thermometer are in good condition, the glass remaining intact. The lower left corner of the case shows a small area of loss to veneer, the small lower moulding to the lower part of the mercury housing is loose, and the timber beneath this (the left end of which shows the missing veneer) is similarly loose at the left end. There is some light scattered fading to the case but the case appears to retain its original polished surface. The thermometer ivory scale has a small area of cracking in two places to its lower edge. The lower timber moulding is loose. 

A mahogany stick barometer by I.Blatt of Brighton, of plain form with ivory vernier scale and thermometer, oval reservoir, 94cm high.

A replica 20th century cistern bulb stick barometer in the 18th century style, with a round topped mahogany case and visible cane, circular domed cistern cover and silvered register with a single Vernier, register engraved with recording scale and weather predictions, red spirit thermometer recording the temperature in degrees Fahrenheit and Celsius. �60-80Dimensions: Height: 92cm 

A FINE OXIDISED BRASS NEWMAN-PATTERN MERCURY STATION BAROMETERJOHN FREDERICK NEWMAN, LONDON, MID 19th CENTURYConstructed with two square section uprights joined at the top with a D-shaped section inset with silvered plate engraved F. NEWMAN, 122 Regent Street, LONDON, over cavetto moulded cornice and central large-bore tube with silvered scale calibrated in millimetres to the left opposing later brass for millibars to the right with rack and pinion adjusted Vernier slide between, the throat with plate engraved with Met Office MO trademark and number 1517 over Vernier adjustment screw and further Met Office plate with calibration note to the right hand upright, the base with substantial cylindrical cistern with band of glazed apertures and incorporating mercury tube Kelvin scale thermometer with bulb immersed in the cistern to left hand side, the instrument suspended via pivoted joint from a scroll-cast bracket with conforming steady bracket to base from an arched caddy-moulded mahogany panel for wall hanging.The board 133cm (52.5ins) high, 20cm (8ins) wide.  Provenance: The exhibition collection of Barometer World Museum, Merton Devon. Acquired direct from the Meteorological Office after withdrawal from use in a Caribbean station believed to be either the Bahamas or Bermuda. John Frederick Newman is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working at 7 and 8 Lisle Street, London, 1816-25 then 122 Regent Street 1827-62 when the business was taken over by Negretti and Zambra. He made standard and portable barometers for James Clark Ross's Antarctic expeditions (1839-1843) and exhibited at the Great Exhibition at Crystal Palace in 1851. Newman's design of station barometer incorporates movable scales to allow calibration against the mercury level in the cistern which may vary very slightly with changes in temperature. After taking-over the business in 1862 Negretti and Zambra continued making barometers to Newman's design including an example which was sold in these rooms on 2nd October 2019 (lot 41) for £2,600. 

A JAPANNED AND LACQUERED BRASS FORTIN-PATTERN LABORATORY/STATION MERCURY STICK BAROMETERNEGRETTI AND ZAMBRA, LONDON, SECOND QUARTER OF THE 20th CENTURYThe instrument with slender cylindrical case with the upper section fitted with a glass sleeve enclosing silvered scale incorporating vertical slot to reveal the tube and sliding silvered Vernier slide reading against silvered scale calibrated in barometric inches to the right and millibars to the left, the upper margin with Met Office number 2241, the reverse with additional Vernier slide reading against a cm scale calibrated 65-82 divided into tenths to the right opposing signature NEGRETTI & ZAMBRA LONDON to the left, the shaft with Vernier adjustment disc to right over brass plaque inscribed M/2241, STANDARD TEMPERATURE, AT 1000Mb... and applied mercury ABSOLUTE and FAHRENHEIT scale thermometer, the base with cylindrical glass chamber clamped between horizontal plates over cylindrical cistern and adjustment screw to base, (unrestored).109cm (43ins) high including top ring, 9cm (3.5ins) max diameter. Provenance: The archive collection of Barometer World Museum, Merton, Devon; acquired direct from the Meteorological Office. The firm of Negretti & Zambra are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1850 when a partnership between Enrico Negretti and Joseph Warren Zambra was formed. The firm became one of the most prolific makers of scientific instruments and continued trading well into the 20th century.The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings. 

A CASED JAPANNED AND LACQUERED BRASS FORTIN-PATTERN LABORATORY/STATION MERCURY STICK BAROMETERUNSIGNED, EARLY TO MID 20th CENTURYThe instrument with slender cylindrical case with the upper section fitted with a glass sleeve enclosing silvered scale incorporating vertical slot to reveal the tube and sliding silvered Vernier slide reading against silvered scale calibrated in barometric inches to the right and millibars to the left, the lower margin inscribed No 1081, the shaft with Vernier adjustment disc to right above applied mercury CENTS and FAH'T scale thermometer, the base with cylindrical glass chamber clamped between horizontal plates over cylindrical cistern and adjustment screw to base, mounted via hook for the top ring and screw clamp at the base onto a rectangular mahogany backboard into a pine framed case with triple panel glazed front door.The cabinet 120cm (47.25ins) high, 18cm (7ins) wide, 12.5cm (5ins) deep. Provenance: The archive collection of Barometer World Museum, Merton, Devon. The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings.Condition Report: Instrument is complete and in original unrestored condition. The tube is filled with mercury however the level will stop around 10mm from the top of the tube when tipped indicating that there is a small amount of air present. The silvering to the scales is a little discoloured and oxidised, the thermometer scale has significant green verdigris deposits/corrosion as does most of the originally lacquered elements of the instrument. The black japanned surfaces are in good original condition with only minor wear etc commensurate with age. The glazed case is intact and free from significant damage however the upper part is discoloured with visible historic mildew deposits and there are areas of minor historic age-related wear. Condition Report Disclaimer

TWO BRASS KEW-PATTERN MERCURY MARINE STICK BAROMETERS ADIE, LONDON AND ADIE, LIVERPOOL, LATE 19th CENTURYEach with slender cylindrical case the first finished in oxidised brass with silvered scale calibrated in barometric inches next to vertical slot revealing the tube and with silvered Vernier slide opposing signature ADIE, LONDON, No. 950, the other black japanned incorporating fully silvered cylindrical scale section signed Adie, Liverpool No. 325 to lower margin, the shafts with Vernier adjustment discs to right, gimbal mount and applied mercury tube Fahrenheit scale thermometers with concealed bulbs, the bases with cylindrical cisterns, (both unrestored the first lacking gimbal yoke, the second lacking tube, both lacking scale glasses), (2).The first 93cm (36.5ins) high, 6.5cm (2.5ins) max diameter; the second 90cm (35.5ins) high, 5cm (2ins) max diameter. Provenance: The archive collection of Barometer World Museum, Merton. Richard (Liverpool) and Patrick Adie (London) were the sons of the celebrated Scottish instruments maker Alexander Adie who is recorded in Goodison, Nicholas English BAROMETERS 1680-1860 as born 1774 and apprenticed to his uncle, the eminent Scottish instrument maker John Miller, in 1789. Alexander Adie was particularly noted for his meteorological instruments and is perhaps best known as the inventor of the Sympiesometer in 1818. In recognition of his work he was elected a Fellow of the Royal Society of Edinburgh in 1819. He was appointed optician to William IV and later Queen Victoria and took one of his sons, John, into partnership in 1835. Two of his other sons set up businesses; Richard in Liverpool from 1837 and Patrick in London from 1846. Unfortunately John Adie was prone to fits of despondency' which resulted in him shooting himself in 1857, Alexander Adie died the following year - no doubt expediated by the stress of his son's demise. Richard Adie subsequently spent a lot of time in Edinburgh looking after the business of Adie and Son up until his death in 1881.The Kew pattern marine barometer was developed prior to 1855 by John Welsh of the Kew Observatory and Patrick Adie and included refinements such as iron cistern beneath thermometer bulb within the brass tube case (in order for the temperature reading to mirror that of the mercury in the tube), a restriction in the bore of the tube (to dampen the movement of the mercury) and a Bunten air trap.

TWO LACQUERED BRASS AND BLACK JAPANNED STATION/LABORATORY MERCURY STICK BAROMETERSBOTH BY CASELLA, LONDON, EARLY 20th CENTURYThe first a rare bench barometer with ring over cylindrical silvered scale with vertical slot to reveal the tube and sliding silvered Vernier slide reading against millibar scale to the right opposing signature CASELLA, LONDON with Met Office monogram MO and numbered 2205 over shaft with Vernier adjustment disc to right and applied mercury tube Centigrade scale thermometer with concealed bulb, the base with disc applied with X and Y positioned spirit levels and over cage of three uprights around the stepped cylindrical cistern applied to a second conforming lower disc with the tube passing to one side and looped into the base of the cistern, on three fine screw adjusting feet; the second of standard Fortin pattern with similar cylindrical brass Vernier scale this time calibrated in barometric inches and signed C.F. CASELLA & Co. LTD, LONDON, No. 2349 to left hand margin, the shaft with Vernier adjustment screw and Fahrenheit scale mercury thermometer over base with cylindrical glass chamber clamped between horizontal plates over cylindrical cistern and adjustment screw to base, mounted via hook for the top ring bracket at the base to a mahogany panel for wall hanging, (both unrestored), (2).The bench barometer 103cm (40.5ins) high, 15cm (6ins) diameter; the Fortin 109cm (43ins) high, 9.5cm (3.75ins) wide. Provenance: The archive collection of Barometer World Museum, Merton, Devon; the first acquired direct from the Meteorological Office. The firm of Casella is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established by Louis Casella in 1838 when he went into partnership with his father-in-law Caesar Tagliabue initially trading as Tagliabue & Casella from 23 Hatton Garden, London. His successor, Louis Pascal Casella worked from 1858 and expanded the business resulting in Casella becoming one of the largest makers of barometers and other instruments in England. Charles Frederick Casella succeeded his father, Louis Pascal, in 1897; the business subsequently became a Limited Company in 1910 and continued trading well into the 20th century. The second barometer in the current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings.

THREE BLACK JAPANNED AND LACQUERED BRASS KEW-PATTERN MERCURY MARINE STICK BAROMETERSJ. HICKS, S. AND A. CALDERARA, AND KELVIN & HUGHES LIMITED, LONDON, EARLY TO MID 20th CENTURY Each with slender cylindrical case with the upper section incorporating silvered scale with vertical slot to reveal the tube and sliding Vernier reading against silvered scale calibrated in barometric inches to the right for all three and millibars to the left for the examples signed J. HICKS, LONDON with Met Office monogram MO and numbered 1298 and KELVIN & HUGHES MARINE LIMITED, LONDON, No. 8507, the third without Millibar scale and signed S. &. A CALDERARA, LONDON to upper margin over Met Office MO monogram and number 2209, the shafts with Vernier adjustment disc to right and applied mercury tube Fahrenheit scale thermometer (Hicks lacking thermometer tube), the bases with cylindrical cisterns, The Kelvin and Hughes now in a wooden box applied with paper labels relating to an instrument by 'F, Darton & Co. Ltd' supplied to the Air Ministry Meteorological Office, (all unrestored lacking scale glasses and in varying states of completeness), (3).The Hicks and Kelvin approximately 90cm (35.5ins) high, 5cm (2ins) max diameter; the Calderara 100cm (39,5cm) high, 9cm (3.5ins) max diameter. Provenance: The archive collection of Barometer World Museum, Merton, Devon; the second and third acquired direct from the Meteorological Office. James Joseph Hicks is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from Hatton Garden, London from 1861 until after 1900. He was a committed Catholic who presented various meteorological instruments to the Vatican receiving the title Knight Commander of St. Gregory in recognition for his services.The firm of Kelvin and Hughes Limited was formed in 1947 with the merger of Henry Hughes and Son Limited of London with Kelvin, Bottomley and Baird Limited of Glasgow.Serafino and Alfred Calderara are recorded by Banfield as working from 10 Cross Street, Hatton Garden, London from 1875 until well into the 20th century.The Kew pattern marine barometer was developed prior to 1855 by John Welsh of the Kew Observatory and Patrick Adie and included refinements such as iron cistern beneath thermometer bulb within the brass tube case (in order for the temperature reading to mirror that of the mercury in the tube), a restriction in the bore of the tube (to dampen the movement of the mercury) and a Bunten air trap.

A CASED JAPANNED AND LACQUERED BRASS FORTIN-PATTERN LABORATORY/STATION MERCURY STICK BAROMETERJ.W. TOWERS AND COMPANY LIMITED, MANCHESTER, EARLY TO MID 20th CENTURYThe instrument with slender cylindrical case with the upper section fitted with a glass sleeve enclosing silvered scale incorporating vertical slot to reveal the tube and sliding silvered Vernier slide reading against silvered scale calibrated in barometric inches to the right and millibars to the left, the upper margin with Met Office number 5483, over signature J.W. TOWERS & Co. LTD, MANCHESTER to lower margin, the shaft with Vernier adjustment disc to right above applied mercury CENTS and FAH'T scale thermometer, the base with cylindrical glass chamber clamped between horizontal plates over cylindrical cistern and adjustment screw to base, mounted via hook for the top ring and screw clamp at the base onto a rectangular oak backboard into a pine framed case with full-height glazed front door and side windows, (unrestored).The cabinet 123cm (48.5ins) high, 21.5cm (8.5ins) wide, 20cm (8ins) deep. Provenance: The archive collection of Barometer World Museum, Merton, Devon. J.W. Towers and Company Limited are recorded in Banfield, Edwin BAROMETER MAKERS & RETAILERS 1660-1900 as working in Widnes and Manchester circa 1880-1900.The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings. 

A VICTORIAN BRASS KEW-PATTERN MERCURY MARINE STICK BAROMETERADIE, LIVERPOOL AND LONDON, CIRCA 1870 The slender cylindrical case with the upper section incorporating vertical slot to reveal the tube and sliding Vernier reading against silvered scale calibrated in barometric inches positioned to the right and signed ADIE Liverpool No. 375. ADIE London to outer margin, set behind a glass sleeve retained by domed cap at the top, the shaft with Vernier adjustment disc and gimbal wall mount over applied mercury tube Fahrenheit scale thermometer, the base with cylindrical cistern.92cm (36ins) high, 5cm (2ins) diameter.  Richard Adie was the son of the celebrated Scottish instruments maker Alexander Adie who is recorded in Goodison, Nicholas English BAROMETERS 1680-1860 as born 1774 and apprenticed to his uncle, the eminent Scottish instrument maker John Miller, in 1789. Alexander Adie was particularly noted for his meteorological instruments and is perhaps best known as the inventor of the Sympiesometer in 1818. In recognition of his work he was elected a Fellow of the Royal Society of Edinburgh in 1819. He was appointed optician to William IV and later Queen Victoria and took one of his sons, John, into partnership in 1835. Two of his other sons set up businesses; Richard (the maker of the current lot) in Liverpool form 1837 and Patrick in London from 1846. Unfortunately John Adie was prone to fits of despondency' which resulted in him shooting himself in 1857, Alexander Adie died the following year - no doubt expediated by the stress of his son's demise. Richard Adie subsequently spent a lot of time in Edinburgh looking after the business of Adie and Son up until his death in 1881.The Kew pattern marine barometer was developed prior to 1855 by John Welsh of the Kew Observatory and Patrick Adie and included refinements such as iron cistern beneath thermometer bulb within the brass tube case (in order for the temperature reading to mirror that of the mercury in the tube), a restriction in the bore of the tube (to dampen the movement of the mercury) and a Bunten air trap. 

A VICTORIAN OAK CASED MERCURY MINER'S STICK BAROMETERUNSIGNED, LATE 19th CENTURYWith canted glazed ceramic Vernier scale calibrated in barometric inches to the right opposing mercury Fahrenheit scale to the left over inscribed serial number No 5991 to lower margin, set behind rectangular glass secured via brass plate bezel, the substantial rectangular section case with shallow-arch top over Vernier adjustment square to throat, chamfered angles to trunk and squared-off base.94cm (37ins) high, 9cm (3.5ins) wide. Provenance: The exhibition collection of Barometer World Museum, Merton, Devon. Miner's pit barometers were adopted during 1860's to assist with the possible prediction of an explosion in coal mine due to anecdotal evidence indicating a pressure drop prior to such events. The Mines Regulations Act of 1872 sought to formalise their use stating 'After dangerous gas has been found in a mine, a barometer and thermometer shall be placed above ground in a conspicuous position near the entrance to the mine'.

A VICTORIAN OAK MERCURY 'ADMIRAL FITZROY'S STORM BAROMETER'NEGRETTI AND ZAMBRA, LONDON, CIRCA 1870The arched bevel-glazed double ceramic Vernier scales flanking mercury tube, each calibrated in barometric inches and with the usual observations, the lower margins annotated ADD ONE TENTH FOR, EACH HUNDRED, FEET ABOVE, THE SEA and 10 A.M YESTERDAY and 10 A.M TO DAY over PATENT and No. 378 and with signature NEGRETTI & ZAMBRA, INSTRUMENT MAKERS, TO HER MAJESTY, HOLBORN VIADUCT E.C., 122 REGENT ST. W, & 59 CORNHILL E.C., LONDON to upper margin, the apex of the arch further inscribed ADMIRAL FITZROY'S, STORM BAROMETER., the trunk with Vernier setting squares to throat above applied glazed mercury tube Fahrenheit scale thermometer further signed NEGRETTI & ZAMBRA, 11, HATTON GARDEN, &, CORNHILL LONDON to upper margin and with ogee moulded crests to the upper and lower rails, the base with rectangular ogee moulded cistern cover over conforming base moulding with level adjustment screw to underside.102cm (40ins) high, 13cm (5ins) wide.  Provenance: The exhibition collection of Barometer World Museum, Merton, Devon.  The firm of Negretti & Zambra are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1850 when a partnership between Enrico Negretti and Joseph Warren Zambra was formed. The firm became one of the most prolific makers of scientific instruments and continued trading well into the 20th century.The current lot is a textbook example of a Fishery or Sea Coast storm barometer devised by Admiral Robert Fitzroy in the 1860`s to aid mariners in the forecasting of storms. Fitzroy lobbied the Board of Trade resulting in this type of barometer being supplied (at public expense) to many coastal communities for display in a prominent public space. In addition to this The Royal Lifeboat Institution installed these barometers into each of its stations and the Duke of Northumberland (in association with the British Meteorological Society) erected several on the coast of Northumberland. By 1864 over 80 barometers had been installed by the Board of Trade and a further 14 by the Duke of Northumberland with their usefulness fully appreciated in Fitzroy's Meteorological Office Report published that year.Condition Report: Instrument is generally in fine original condition with the tube filled with mercury with no air present. The barometer scales are undamaged. The thermometer scale is also in good original condition although the ceramic scale has a few light spots of browning mainly towards the edges. The case is in fine original unrestored condition with faults very much limited to a few minor bumps, scuffs, age related grime and tarnishing to the lacquered brass fittings hence can be described as having genuine light age-related patina. Condition Report Disclaimer

TWO DECORATIVE MERCURY STICK BAROMETERSBEARING SIGNATURES FOR I. BLATT, BRIGHTON, AND RIVA, SELBY, 20th CENTURYThe first mahogany with arched ivorine Vernier scale calibrated in barometric inches and with the usual observations beneath text I. BLATT, BRIGHTON opposing Fahrenheit scale spirit thermometer to the left hand side, the second yew wood with onion-shaped top over silvered scale inscribed RIVA, Selby to upper margin, each with visible tube to slender trunk over circular cistern cover to the rounded base, (2).The first 90cm (35.5ins) high, 9cm (3.3ins) wide; the second 93cm (36.5ins) high, 8cm (3.125ins) wide. Provenance: The retail stock of Barometer World Museum, Merton Devon. 

A GEORGE III STYLE LINE-INLAID MAHOGANY MERCURY STICK BAROMETERO. COMITTI AND SON, LATE 20th CENTURY With open triangular pediment over silvered Vernier scale calibrated in barometric inches and with the usual observations beneath signature O. Comitti and Son, LONDON to the right hand side opposing Fahrenheit and Centigrade scale alcohol thermometer to the left, set behind line-strung hinged glazed door over trunk with visible tube flanked by conforming vertical line inlay and ring-turned domed cistern cover to the rounded base.96.5cm (38ins) high excluding brass finial, 14cm (5.5ins) wide. Provenance: The retail stock of Barometer World Museum, Merton Devon.

A GEORGE III STYLE CHEVRON-STRUNG MAHOGANY MERCURY STICK BAROMETERO. COMITTI AND SON, LATE 20th CENTURY With open triangular pediment over silvered Vernier scale calibrated in barometric inches and with the usual observations beneath signature O. Comitti and Son, LONDON to the right hand side opposing Fahrenheit and Centigrade scale alcohol thermometer to the left, set behind chevron-edged hinged glazed door over trunk with visible tube flanked by conforming vertical parquetry inlay and ring-turned domed cistern cover to the rounded base.96.5cm (38ins) high excluding brass finial, 14cm (5.5ins) wide. Provenance: The retail stock of Barometer World Museum, Merton Devon.

AN UNUSUAL GEORGE III STYLE CHEVRON-STRUNG MAHOGANY ANEROID FLUID TUBE STICK BAROMETERUNSIGNED, LATE 20th CENTURYWith swan neck pediment over silvered Vernier scale calibrated in barometric inches and with the usual observations to the right hand side opposing Fahrenheit and Centigrade scale alcohol thermometer to the left, set behind chevron-edged hinged glazed door over trunk with visible tube filled with light-green translucent fluid flanked by conforming vertical parquetry inlay and ring-turned domed cistern cover to the rounded base enclosing transverse mounted four-segment aneroid chamber and pivoted linkage connecting to a diaphragm chamber fitted at the base of the tube. 96.5cm (38ins) high excluding brass finial, 14cm (5.5ins) wide. Provenance: The retail stock of Barometer World Museum, Merton Devon. The above lot utilises and aneroid mechanism connected to a diaphragm to raise and lower the level of a column of green dyed fluid in the tube. This system was developed by Philip Collins of Barometer world in order to create an instrument that has the attractive visual qualities of a stick barometer but with the practicalities of an aneroid barometer. 

AN UNUSUAL GEORGE III STYLE CHEVRON-STRUNG MAHOGANY ANEROID FLUID TUBE DWARF STICK BAROMETERUNSIGNED, LATE 20th CENTURYWith swan neck pediment over silvered Vernier scale calibrated in barometric inches and with the usual observations to the right hand side opposing Fahrenheit and Centigrade scale alcohol thermometer to the left, set behind chevron-edged hinged glazed door over trunk with visible tube filled with light-green translucent fluid flanked by conforming vertical parquetry inlay and ring-turned domed cistern cover to the rounded base enclosing transverse mounted four-segment aneroid chamber and pivoted linkage connecting to a diaphragm chamber fitted at the base of the tube. 66cm (26ins) high excluding brass finial, 14cm (5.5ins) wide. Provenance: The retail stock of Barometer World Museum, Merton Devon. The above lot utilises and aneroid mechanism connected to a diaphragm to raise and lower the level of a column of green dyed fluid in the tube. This system was developed by Philip Collins of Barometer world in order to create an instrument that has the attractive visual qualities of a stick barometer but with the practicalities of an aneroid barometer. The squat proportions of the present instrument is possible as it does not rely on the weight of a mercury column to provide an indication of barometric pressure. 

A RARE AMERICAN WALNUT CASED MERCURY 'UNION' BAROMETER CURRIER AND SIMPSON, THIRD QUARTER OF THE 19th CENTURYThe ogee moulded rectangular glazed case enclosing syphon tube with large mercury bulb reading against a scale calibrated in barometric inches with Vernier with up-down adjustment in tandem with the entire Fahrenheit scale mercury thermometer positioned to the left hand side via a knob to the base of the case, the upper margin stamped CURRIER & SIMPSON, PAT'D JAN 31. 1880 the top of the case with valve for closing the top of the mercury tube to the atmosphere, the rear with pasted paper label providing instructions for use.39cm (15.5ins) high, 13cm (5ins) wide. Provenance: The exhibition collection of Barometer World Museum, Merton, Devon. Surprisingly little appears to be recorded regarding Simpson and Currier, however the current lot was apparently devised as a small portable form of mercury barometer no doubt targeted to frontiersmen amongst others. The instrument utilises a sealed bulb cistern part filled with air connected to a short column. Change in barometric pressure will naturally cause the mercury column to move but also will a change in temperature. In order to allow for the effect of temperature the level of mercury in the thermometer tube has to be first aligned with that of the barometer tube; the Vernier (which is directly connected to the movement of thermometer) will then provide the reading in barometric inches.  

TWO ANEROID SURVEYING BAROMETERSSHORTS & MASON AND ELLIOTT BROTHERS, LONDON, EARLY 20th CENTURYThe first with 2.75 inch circular silvered register inscribed Surveying Aneroid, COMPENSATED, No C.28039, SHORT & MASON, LONDON, MADE IN ENGLAND to the recessed centre within barometric scale calibrated in inches divided into fiftieths and outer altimeter scale annotated 0 to 6000 divided to ten foot intervals and with moving Vernier to outer margin, the aluminium case with pivoted magnification lens and knurled crown for adjusting the outer Vernier within the suspension ring, with original leather carrying case; the second with 4.25 inch circular silvered register with subsidiary 0-5,000 1ST and 2nd CIRCLE dial and inscribed Surveying Aneroid, repeating circle reading 1st Circle 0 to 5000 ft, 2nd (ditto) 5000 to 10000 (ditto) over Elliott Bros. LONDON, COMPENSATED to the recessed centre, within double concentric scale calibrated in barometric inches annotated 22 to 25 then 26 to 31 divided into hundredths within outer altimeter scale double-numbered for 0 to 5,000 and 10,000 feet divided for every ten feet and with movable Vernier labelled ASCENT to outer edge, the chrome plated case with pivoted magnification lens and knurled crown for adjusting the outer Vernier to a post at the top, (2).The first 8cm (3.125ins) diameter, 4cm (1.5ins) deep; the second 12.7cm (5ins) diameter, 5cm (2ins deep) excluding magnifiers. Provenance: The exhibition and archive collections of Barometer World Museum, Merton, Devon. Elliott Brothers are recorded by Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as succeeding William Elliott and Sons at 56 The Strand, London in 1853. The firm of Short and Mason are recorded in Banfield, Edwin BAROMETER MAKERS & RETAILERS 1660-1900 as operating from 62 Hatton Garden, London 1873-75 then 40 Hatton Garden from 1876. They were leading makers of barographs and aneroid barometers well into the 20th century later merging with Taylor Instruments in 1969. 

A mid-19th century lacquered and brass sextant, engraved on silvered scale G Whitbread, London and A M Williams RN, (Vernier retaining, screw lacking, in need of restoration), (unboxed) and a Capt. Fields ebony parallel rule. (2)

A late 19th/early 20th century oxidized and lacquered brass surveyor's theodolite, signed 'L. Tesdorpf Stuttgart' and numbered '2216', the telescope with rack and pinion focusing above a vertical circle with silvered scale, vernier and eyepiece, the signed horizontal circle with silvered scale, on adjustable feet, height 26.5cm (some faults).Buyer’s Premium 29.4% (including VAT @ 20%) of the hammer price. Lots purchased online via the-saleroom.com will attract an additional premium of 6% (including VAT @ 20%) of the hammer price.

A Large Part Scientific Instrument by W. Ladd English, c.1880, signed in script 'W Ladd & Co London' with fusee chain focusing and platinum vernier scale, of large proportions 33cm long

Large Spectroscope Prisms, a collection of spectrascope prisms for including one on a large black table with clamp and vernier scale, another smaller on a black base, an early example in a lacquered brass frame, and a lens in a frame

Two Protractors by Stanley, late 19th century hand engraved single arm circular protractor in lacquered brass, reading to one arc-minute by vernier, 14.7cm diameter, with a good early20th century180 degreeprotractor in lacquered gunmetal, divided to half a degree, with base scale with 1/50th inch divisions, both in mahogany cases

brass with Vernier scale, in fitted caseCondition report: General tarnishing, mirror cloudy, scale worn and a little difficult to read

with ivory scale in mahogany caseCondition report: General wear and tarnishing, appears to be all original, chip out of lower side of Vernier scales, large chip out of horizon glass

A 19th century sextant by Bennet of Cork, the pierced ebony frame with ivory maker`s plaque and Vernier arc scale, fitted with pivoted shades and horizon mirror, 11½" (27cm) wide, 14" (35cm) high; with gilt metal plumb; in green painted fitted case with retailers' labels for D. Eggert & Son, New York and for Samuel Thaxter & Son Boston.

A mahogany and lacquered brass Fortin type stick barometer, Burkes & Jones Bristol No. 075, the case with moulded finial to a cylindrical head with silvered two part scale of 27-31 and screw adjusting vernier scale to a gimble mount (lacking wall bracket) over a singed and silvered, twin scale, alcohol thermometer and a cylindrical reservoir to the base, height 97cm

A Mahogany Stick Barometer, signed Jas Burgess, Long Sutton, circa 1820, broken arch pediment, exposed mercury tube, single vernier scale signed, thermometer tube, turned cistern cover, 97cm high Condition report: Bottom of the case with a chip, case with small scratches in parts, dial is discoloured, mercury is visible in the tube.

STANLEY LEATHER CASED ABNEY LEVEL CLINOMETER, c. 1900-1914, patinated brass, stamped 'Stanley, Great Turnstile, Holborn, London', 12cms long Comments: Consists of a small telescope eyesight and an adjustable tubular spirit level, which is connected to a semi circular protractor scale and vernier, marked in both slope and degrees up to ±60°. The Abney (hand spirit) Level or Clinometer, allows the object to be sighted and the level bubble can then be seen simultaneously, so that the index can be set accurately.

A Victorian rosewood cased stick barometer, the arched ivorine dial with vernier scale and inscribed 'G. Guarnerio Scarborough', the arched case with mercury thermometer to trunk and turned brass cylindrical cistern cover, height 94.5cm.Buyer’s Premium 29.4% (including VAT @ 20%) of the hammer price. Lots purchased online via the-saleroom.com will attract an additional premium of 6% (including VAT @ 20%) of the hammer price.

A Good Sextant by C H Rogen, Grimsby, A Good Sextant by C H Rogen, Grimsby,dated 1912, 155 degree silver scale, divided to 10 arc-minutes, reading by vernier to 10 arc-seconds, three telescopes, sun filter, adjustment rod and magnifying glass, in original fitted mahogany case with National Physical Laboratory certificate for November 1912

Early 20th Century Davis & Son, Derby mining dial, No 3040, the silvered compass engraved JOHN DAVIS & SON, DERBY 3040, with level and cross-bubble, mounted with axis on a shaped base incorporating twin folding sights and inclination dial with bevelled glass cover, the compass base incorporating a silvered chamfered horizontal circle with vernier scale, the underside with screw-clamp, with dial cover-plate, the tripod mounting with ball-socket joint and tightening screw, contained in the original mahogany case, 29.5cm wideCondition report: General wear to box including split to cover. Contents appear sound but are untested and unwarranted.

Second quarter 19th Century mahogany stick barometer, J. [John Frederick] Newman, 122 Regent St., London, (fl. 1827-1856), the silver two-piece scale reading from 27 to 31 inches of pressure with remarks, flanking partially exposed main tune, the moulded trunk with bone vernier adjusting knob over turned cistern cover, 96cm highCondition report: Cleaned and restored condition (bought from P. A. Oxley early 1990s), mercury responsive, a good example.

Late 19th century walnut boxwood cistern stick barometer with a double canted register and weather predictions, measuring barometric air pressure from 27 to 31 inches, arched glazed top and rectangular trunk, with twin vernier setting discs above a mercury Fahrenheit and Celsius scale thermometer, the rounded base with a circular moulded cistern cover.

A Victorian boxwood cistern tube stick barometer manufactured by Nagretti & Zambria, London, circa 1860 in an oak �Gothic� revival case, with a fleur-de-Lis carved pediment on a projecting cornice, the pediment supported by carved columns and pendants with carved spandrels flanking a central double register, with weather predictions and barometric air pressure from 27 to 31 inches, twin vernier scale on either side of the mercury tube recording �today's� and �yesterdays� air pressure, dial inscribed �Neggretti & Zambria instrument makers to her majesty, 1 Hatton Gardens, 50 Cornhill & 122 Regent Street� rectangular trunk with canted corners, two carved vernier setting discs above a boxed scale mercury thermometer measuring the temperature in degrees fahrenheit and centigrade, corresponding rectangular carved plinth to the cistern cover.Dimensions: Height: 104cm 

19th Century oak stick barometer, signed Adie & Son, Edinburgh, with swan-neck pediment above a silvered dial, with scale of 27 to 31 and screw adjusting vernier, above a long trunk and angled base with cistern cover, 100cm

A 20th century R N Desterro Lisbon brass marine barometer, the silvered scale with a rack and pinion vernier, gimballed truck with wall mounting and a brass cistern cover, 94cm high

Ø AN 11½IN. RADIUS VERNIER OCTANT BY SPENCER BROWNING & RUST, LONDON, CIRCA 1790 the ebony T-frame with maker’s plate as per title, inset ivory scale with SBR mark to centre, divided to 95º, brass index arm with clamp, double pinhole sight, mirrors, three interchangeable shades, contained within stepped keystone case – 15in. (38cm.) highCondition report: Good overall condition, lacking pencil from T-bar.

A 6½IN. RADIUS VERNIER SEXTANT BY J. COMBES, DEVONPORT, CIRCA 1900 with oxidised brass three-circle frame, the arc numbered 9602 and signed J. Combes Opticians & Instrument Maker, Devonport, inset silvered scale divided to 140°, vernier inscribed G.C.P. Menzies R.N. with reflector and swivel magnifier, interrupted telescope mount, seven shades, two mirrors, wooden handle and pin feet, contained in fitted box of issue with sighting tubes and test certificate dated 1959 -- 10¾in. (27cm.) wide; together with another with lattice frame, unsigned (2)

A 7IN. RADIUS VERNIER SEXTANT BY P. CAMERON, GLASGOW, CIRCA 1870 brass ladder frame signed as per title with inset silvered scale divided to 140°, vernier with magnifier, braced index arm, seven shades, two mirrors, ebony handle, contained within fitted keystone box with three sighting tubes, pencil inscription inside lid reading Capn Cunningham late Maggie Douglas now Eve -- 13in. (33cm.) wide; together with a quantity of research about the Maggie Douglas

A 7¼IN. RADIUS PRESENTATION VERNIER SEXTANT BY FRODSHAM & KEENE, LIVERPOOL, CIRCA 1892 the polished brass ladder frame signed as per title and numbered 4840, with inset silvered scale divided to 140°, vernier with clamp, magnifier, mirrors, shades and wooden handle, contained within fitted box with four sighting tubes and presentation plate to lid: From Trinity House to Reginald Vincent Peel, H.M.S. Conway, July 1892 – 11in. (28cm.) wideFootnote: Reginald V. Peel R.N.R (1875-1964). was a Trinity House Queen's Medallist aboard the training ship Conway, winning this sextant in 1892. He joined Cunard in 1900 but was detached to serve in the Navy for the duration of hostilities in 1914. Resuming with Cunard, he commanded many vessels, most notably the Mauretania, Aquitania and Queen Mary. After the merger with White Star Line, he also served aboard Olympic and Majestic rising to the rank of commodore.Condition report: Overall good condition, frame polished

AN 8IN. RADIUS DOUBLE-FRAMED SEXTANT BY TROUGHTON, CIRCA 1810 the oxidised brass 'T' frame signed on the arc Troughton London, with silver scale divided to 110º, vernier with swivel magnifier and reflector, braced index arm, mirrors, seven shades and wooden handle, contained in fitted keystone case with five sighting tubes and three filters, the lid with brass owner's plate with armorial inscribed under William C. Hotham -- 14½in. (37cm.) diamFootnote: Captain William Charles Hotham (1846-1889) served in the Indian Marine. This instrument may have been handed down or purchased second-hand as Troughton (as a sole trader) had ceased production by 1826.Condition report: Original condition, some spotting to frame but retaining much original finish, generally very good.

Ø A 13½IN. RADIUS VERNIER OCTANT BY ROBERT BANCKS, STRAND, LONDON, CIRCA 1790 with ebony T-frame signed on the crossbar R. Bancks, Strand, London, inset ivory scale divided to 95º with Ramsden division engine mark by 50º, brass index arm, double pinhole sights, interchangeable shades, mirrors, noteplate and brass pad feet, contained in stepped mahogany box of issue -- 18in. (46cm.) wide

A 19th century lacquered brass theodolite by Dollond, London: the 12 inch sighting tube signed to sliding shade as per title, mounted to the limb by double clamps over vertical half circle double calibrated 0° to 30° for Diff of Hypo & Base to one side, the opposite with calibrated scale and magnifier, above a vernier plate with silvered ring and magnifier, double spirit levels and triple screw adjust, in a mahogany case, the case 49.5 x 26 x23cm case.

A fine 8 inch radius Gold and Platina Sextant by Carey of London, formerly the property of Rear-Admiral Ernest John Spooner DSO (1887-1942): the lacquered brass 'T' frame with arc inscribed and numbered 'Gold & Platina. Carey, London . 2509', the gold scale divided to 140°, vernier platina scale, magnifier, adjustable sighting tube socket and black painted mirrors and shades, ebonised handle and three brass feet, together with two sighting tubes and accessories in a fitted mahogany case with National Physical Laboratory calibration certificate dated April 1920, brass plaque to top engraved 'J S Spooner RN', the case 12.5 x 19.5 x 27cm.*Notes- Rear Admiral Ernest John Spooner DSO was one of the senior Royal Navy Officers based in Singapore during the Japanese invasion of Malaya and the fall of Singapore in WWII. In 1942 his wife Megan had been evacuated from Singapore and Spooner remained behind to assist in organising the civilian evacuation. Under increasing operations by the Japanese the coordination of the evacuation became impossible. Attempting to escape on a small motor launch Spooner and around 40 others became stranded on a small island. Despite search efforts by the British, the lack of fresh water and food on the small island forced the survivors to surrender to the Japanese. Sadly Spooner had died of exhaustion and malaria before the surrender.Together with an accompanying letter of provenance from the vendor whose family were friends with Mrs M Spooner in the 1960s.

c.1865, by R Bailey of Birmingham, in oak with hemispherical cistern cover, boxwood cistern with adjustment screw, ivory register plate marked 'Bailey 14 Bennetts Hill Birmingham' scale with vernier, thermometer giving Fahrenheit and centigrade. Shipping Note: The barometer tube can be drained for shipping, there is an additional charge of GBP 35.00 (+VAT where applicable) for this sservice in addition to shipping costs. This item is not available for export to the United States.

A VICTORIAN OAK MERCURY 'ADMIRAL FITZROY'S STORM BAROMETER'Negretti and Zambra, London, circa 1870The arched bevel-glazed double ceramic Vernier scales flanking the large bore mercury tube, each calibrated in barometric inches and with the usual observations, the lower margins annotated ADD ONE TENTH FOR, EACH HUNDRED, FEET ABOVE, THE SEA and 10 A.M YESTERDAY and 10 A.M TO DAY over PATENT No. 1481 and with signature NEGRETTI & ZAMBRA, INSTRUMENT MAKERS, TO HER MAJESTY, HOLBORN VIADUCT E.C., 122 REGENT ST. W, & 59 CORNHILL E.C., LONDON to upper margin, the apex of the arch further inscribed ADMIRAL FITZROY'S, STORM BAROMETER., the trunk with Vernier setting squares to throat above applied glazed mercury tube Fahrenheit scale thermometer further signed NEGRETTI & ZAMBRA, LONDON to upper margin and with ogee moulded crests to the upper and lower rails, the base with rectangular ogee moulded cistern cover over conforming base moulding with level adjustment screw to underside.102cm (40ins) high. Provenance: The Selwyn Demmy Collection. The firm of Negretti & Zambra are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1850 when a partnership between Enrico Negretti and Joseph Warren Zambra was formed. The firm became one of the most prolific makers of scientific instruments and continued trading well into the 20th century.The current lot is a textbook example of a Fishery or Sea Coast storm barometer devised by Admiral Robert Fitzroy in the 1860`s to aid mariners in the forecasting of storms. Fitzroy lobbied the Board of Trade resulting in this type of barometer being supplied (at public expense) to many coastal communities for display in a prominent public space. In addition to this The Royal Lifeboat Institution installed these barometers into each of its stations and the Duke of Northumberland (in association with the British Meteorological Society) erected several on the coast of Northumberland. By 1864 over 80 barometers had been installed by the Board of Trade and a further 14 by the Duke of Northumberland with their usefulness fully appreciated in Fitzroy's Meteorological Office Report published that year.Condition Report: The tube is filled with no apparent airlocks and both Vernier slides are fully operational however there is only one key present. The arched signature plate has some slight hairline cracking to the lower right hand corner which can only really be seen on very close examination being behind the bevel cut of the glass. The thermometer is in good condition although the tube is probably a replacement. The case is in good original condition with only minor bumps, scuffs and other age related blemishes. Condition Report Disclaimer

A FINE VICTORIAN LACQUERED BRASS FORTIN-TYPE LABORATORY MERCURY STICK BAROMETERNegretti and Zambra, London, late 19th centuryThe instrument with slender square section case pierced with a vertical slot to reveal the tube incorporating sliding silvered Vernier slide reading against silvered scale calibrated in barometric inches to the right and millibars to the left beneath serial number 1838 to upper margin, the shaft with Vernier adjustment disc to right over signature NEGRETTI & ZAMBRA, Scientific Instrument Makers to Her Majesty, LONDON to throat and applied mercury tube thermometer with large bulb within brass protective housing and Fahrenheit scale inscribed directly onto the tube, the base with square glass chamber enclosing mercury and incorporating inverted ivory level pointer to interior clamped between horizontal plates over cylindrical chamber and adjustment screw to base, mounted via a brass ring to top and base collar-bracket with triple securing screws onto a rectangular moulded oak panel applied with an ivorine plate further inscribed NEGRETTI & ZAMBRA, Scientific Instrument Makers, to Her Majesty, LONDON fitted into a rectangular cabinet with moulded cornice over rectangular bevel-glazed door.The instrument 104cm (45ins) high; the cabinet 140cm (55ins) high, 26cm (10.25ins) wide, 19cm (7.5ins) deep. Provenance: The Selwyn Demmy Collection. The firm of Negretti & Zambra are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1850 when a partnership between Enrico Negretti and Joseph Warren Zambra was formed. The firm became one of the most prolific makers of scientific instruments and continued trading well into the 20th century.The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings. This particular type of barometer provides an accurate reading hence was generally adopted for laboratory use throughout the 19th and early 20th centuries.Condition Report: Instrument is filled with mercury and provides a good reading with no apparent airlocks. The silvering to the scales is in good condition with only minor discolouration/mellowing and the Vernier slide is operational. The brass case is in good condition although has probably been polished at some point (original lacquer removed) and the finish is generally a little dull/oxidised. The cabinet no longer has its original clasp for the door (has been substituted for a pivoted hook clasp) and has some noticeable bumps and scuffs to the exterior otherwise is in sound original condition. Condition Report Disclaimer

Y A FINE REGENCY MAHOGANY FLAT-TO-THE-WALL BOWFRONTED MERCURY STICK BAROMETERA. and H. Fraser, London, early 19th centuryWith swan neck pediment and cavetto cornice over rectangular bow-glazed silvered Vernier scale calibrated in barometric inches with the usual observations beneath signature A. & H. Fraser, LONDON, the ebony line-edged trunk of the same bowed profile incorporating Vernier setting squares to throat over inset bow-glazed mercury tube Fahrenheit and Reaumur scale thermometer within moulded ebony surround, the base with turned half vase cistern cover flanked by ebony vertical line strung canted angles over cavetto moulded underside incorporating level adjustment screw at the base of the cistern vase.99cm (39ins) high. A. And H. Fraser are recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working from 3 New Bond Street, London, in 1816.Condition Report: The tube is filled with mercury but there is an airlock in the column. The scales have a patch of discolouration towards the left hand margin otherwise are in good condition. The case is missing a 'button' to one of the swan neck pediment scrolls and a small section of ebony moulding to the left hand side of the base (beneath the cistern) otherwise instrument is in fine condition with other faults very much limited to slight age related bumps and scuffs. Condition Report Disclaimer

A VICTORIAN OXIDISED AND LACQUERED BRASS FORTIN-TYPE LABORATORY MERCURY STICK BAROMETERBaird and Tatlock, London, late 19th centuryThe instrument with slender cylindrical case with the upper section fitted with a glass sleeve enclosing silvered scale incorporating vertical slot to reveal the tube and sliding silvered Vernier slide reading against silvered scale calibrated in barometric inches to the right and millibars to the left, the lower margin signed BAIRD & TATLOCK, LONDON and numbered 2013, the shaft with Vernier adjustment disc to right over applied mercury tube thermometer with bulb within protective housing and Fahrenheit scale, the base with cylindrical glass chamber enclosing mercury and incorporating inverted ivory level pointer to interior clamped between horizontal plates over cylindrical cistern and adjustment screw to base, mounted via a brass ring to top and base collar-bracket with triple securing screws onto a rectangular moulded walnut panel incorporating curved top and base, fitted into a rectangular cabinet with shaped-outline crest over moulded cornice and channel-moulded uprights flanking the rectangular glazed door fitted with ivorine button inscribed BAIRD & TATLOCK, LONDON to lower rail, with further glass panels to sides and on moulded base.The instrument 109cm (43ins) high; the cabinet 132cm (52ins) high, 27cm (10.5ins) wide, 17cm (6.5ins) deep. Provenance: The Selwyn Demmy Collection. The firm of Baird and Tatlock are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as a partnership between Hugh Harper Baird and John Tatlock formed circa 1881 specialising as Laboratory furnishers, chemical, mathematical and philosophical instrument makers. They supplied the Admiralty, the War Office, the India Office and the Crown Agents for the Colonies and operated from several addresses in Glasgow and Edinburgh as well as from 14 Cross Street Hatton Garden from 1889. The business became a Limited Company in 1897 and continued to trade from the same London address until 1935. The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings. This particular type of barometer provides an accurate reading hence was generally adopted for laboratory use throughout the 19th and early 20th centuries.Condition Report: Instrument is filled with mercury and provides a good reading with no apparent airlocks. The silvering to the scales is in fine condition with minimal discolouration/mellowing and the Vernier slide is operational. The brass case is in good original condition retaining its original finishes with only slight spotting a wear to the lacquer in places. The cabinet is in good original condition with only minor age related bumps, scuffs and minor blemishes. Condition Report Disclaimer

A FINE GEORGE III MAHOGANY BAYONET-TUBE MERCURY STICK BAROMETER WITH LARGE SCALE THERMOMETERNairne and Blunt, London, circa 1780 The arched-top caddy moulded case inset with glazed hygrometer inscribed DAMP DRY and with beard setting square beneath over concave-topped silvered Vernier scale calibrated in barometric inches to the right hand margin opposing weather observations to the left, the upper margin signed Nairne and, Blunt, London and the lower edge decorated with an engraved leafy scroll flanked cavetto-shaped angles, the trunk applied with full-height silvered-scale mercury thermometer calibrated in Fahrenheit with scale divided in degrees annotated 0-120 opposing markers inscribed Freezing, Temperate, Sum'r Heat, Blood Heat and Fever Heat over spiral pierced brass bulb shield and circular base applied with half sphere cistern cover incorporating sleeved level adjustment screw to underside. 108cm (42.5ins) high. The collaboration between Edward Nairne and his former apprentice Thomas Blunt is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as established in 1774 and lasting until 1793. Edward Nairne was born in 1726 and apprenticed to the celebrated instrument maker, Matthew Loft, in 1741. Latterly he worked from 20 Cornhill and published numerous booklets on navigational, pneumatic and astronomical instruments. In 1776 Nairne devised a marine barometer with a restriction to the bore of the mercury tube which served to dampen the oscillation of the mercury, he was elected Fellow of the Royal Society in 1776 and died 1806. Thomas Blunt was apprenticed to Edward Nairne in 1760 with whom he formed a loose partnership in 1774, perhaps for mutual convenience as his premises were next door to Nairne's at 22 Cornhill. Blunt designed some of the components for the 'New Barometer' devised by the Portuguese Scientist J.H. Magellan for measuring altitude, and latterly became instrument maker to George III. In 1793 he took his son, also named Thomas, into partnership and subsequently relocated to 136 Minories in 1814, he died in 1822. A small group of bayonet-tube stick barometers incorporating a large scale thermometer by Nairne and Blunt are known. These include an example in The Whipple Museum, Cambridge (illustrated in Goodison, Nicholas English Barometers 1680-1860 on page 186, Plate 124); another previously in the collection of Edwin Banfield is illustrated in his publication BAROMETERS, Stick or Cistern tube on page 75 and a third was also sold in these rooms on 15th March 2018 (lot 38) for £3,200 hammer. These three differ from the current lot in that they do not have a hygrometer fitted however an example which also includes a hygrometer, hence is very closely comparable with the current lot, was sold at Lyon and Turnbull, Edinburgh, 19th May 2021 in their sale titled Five Centuries: Furniture, Paintings & Works of Art (lot 123) for £4,000.Condition Report: The tube is filled with mercury with no apparent airlocks. The register plates/scales have overall patchy discolouration and tarnishing to the silvering otherwise are in fine original condition with the delicate engraving showing very little wear suggesting that the plates have not been re-silvered many times in the past. The wheat beard to the hygrometer is currently detached otherwise is in good condition with the adjustment mechanism intact and working. The thermometer is in good condition; the brass fittings are however somewhat discoloured/tarnished. The case is in good original condition showing old but relatively flat surface with some wear mainly to the dome of the cistern cover. There is no key present to the hygrometer or level adjustment squares. Condition Report Disclaimer

A LATE VICTORIAN LACQUERED BRASS FORTIN-TYPE LABORATORY MERCURY STICK BAROMETERNegretti and Zambra, London, late 19th centuryThe instrument with slender cylindrical case pierced with a vertical slot to reveal the tube incorporating sliding Vernier collar reading against a silvered scale calibrated in barometric inches bordering the right hand side opposing millibar scale to the left, the shaft with Vernier adjustment disc to right over engraved signature H. Negretti & Zambra, 1 Hatton Garden, 122 Regent St. W. & 39 Cornhill, London and applied mercury tube FAHRENHEIT thermometer with canted silvered scale and enclosed bulb to front, the base with cylindrical glass chamber enclosing mercury and incorporating inverted ivory level pointer to interior clamped between horizontal plates over cylindrical cistern and adjustment screw to base, mounted via a brass ring to top and base collar-bracket with triple securing screws onto a rectangular ogee moulded walnut panel with curved top and base and inset with a brass-bordered trade plate inscribed NEGRETTI & ZAMBRA. METEOROLOGICAL, INST'T MAKERS, TO HER MAJESTY, 1 HATTON GARDEN E.C., 59 CORNHILL E.C., 122 REGENT ST. W., LONDON. to centre.The instrument 102cm (40ins) high; the wall panel 103cm (44ins) high, 14cm (5.5ins) wide. Provenance: The Selwyn Demmy Collection. The firm of Negretti & Zambra are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1850 when a partnership between Enrico Negretti and Joseph Warren Zambra was formed. The firm became one of the most prolific makers of scientific instruments and continued trading well into the 20th century.The current lot is made to the principles laid down by Nicholas Fortin (1750-1831) and incorporates a glazed cistern so that the level can be calibrated via the adjustment screw to the base against an inverted conical ivory cone in the cistern in order to obtain consistency in the readings. This particular type of barometer provides an accurate reading hence was generally adopted for laboratory use throughout the 19th and early 20th centuries. Condition Report: Instrument is filled with mercury and provides a good reading with no apparent airlocks. The silvering to the scales has discolouration/mellowing, the Vernier slide is operational. The brass case is in sound condition but has patchy strong discolouration and wear to the original lacquered finishes. The back panel has some historic age related bumps, scuffs shrinkage and discolouration/blooming to the finish. Condition Report Disclaimer