We found 137 price guide item(s) matching your search

A mid century Fortin barometer with gimbal mount. By Casella no. 7803 with pine stow case together with daily weather observations from the 60's to 2015 of the Penzance area and Vols 1-2 of the International Cloud Atlas.

Fortin Barometer, Pastorelli & Rapkin, English, engraved to the top of the scale 'Pastorelli & Rapkin Ltd, 46 Hatton Garden, London EC, No.1093' the barometer of typical form, with adjustemtn screw to base, with scale reader adjustment, mounted on a polished oak board in a white painted outer case, case height 114cm Note: this item contains mercury and cannot be posted. it MUST be collected.

Fortin barometer by F.Darton and co Watford

Fortin type brass marine barometer with gimbal mount, inscribed plaque and travel case. Marked to base Heath & Co 1895

A Fortin Barometer, mounted on a wooden backboard, 107cm highBrass surfaces are slightly discoloured in parts, mercury visible in tube Not tested for accuracyEarly 20th century

A Fortin Barometer, Single Vernier Dial Signed A. Gallenkamp & Co. Ltd., London, contained within a glazed mahogany case, 117cm overall

Y&nbspA FINE VICTORIAN OXIDISED BRASS FORTIN-TYPE MERCURY FORECASTING BAROMETERGEORGE S. WOOD, LIVERPOOL, CIRCA 1880Constructed with central large-bore tube flanked by silvered scales applied to separate ebonised moulded panels calibrated in barometric inches 0-32 and with rack and pinion adjusted Vernier slide to right hand side, opposing an arrangement of three plates engraved with detailed forecasting predictions within fine scroll engraved margins and incorporating recording slide labelled SET AT, 9 A.M. YESTERDAY to top, the apex with further applied bridging plate signed G.S. Wood, LATE ABRAHAM & Co., OPTICIAN, LIVERPOOL, the base with substantial cylindrical cistern incorporating glazed collar enclosing ivory level pointer between screw-clamped collars over fine level adjustment screw to underside, the instrument mounted onto the backboard of a full-height half-round glazed case opening at the front, with domed cupola surmounted with a reeded gilt brass ball finial and conforming inverted dome to base, (mercury removed).130cm (51ins) approx. high, 20.5cm (8ins) wide, 15cm (8ins) deep. George S. Wood is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as taking over the business of Abraham Abraham and Company located at 20 Lord Street, Liverpool in 1875 and working until 1894. 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. The combination of comprehensive scales complete with detailed observations to assist in forecasting (based on those laid-out by Admiral Fitzroy in the 1850's) and fine bow-fronted case suggests that the current lot was either made to be exhibited by the maker (possibly in his own showroom) or for a wealthy client or institution. Condition Report: Instrument appears complete with the exception of mercury and two (of the three) brass cistern securing rods and screws (for holding the base of the cistern tight against the cylindrical glass sleeve) which are now unfortunately missing. The silvering to the register plates has some patchy discolouration but engraving is fine and crisp. The case is in good original condition with noticeable faults apparently only limited to the finial being a little bent. Condition Report Disclaimer

An early 20th century Fortin type laboratory mercury stick barometer by Negretti and Zambra - with silvered scales and incorporating a thermometer.

Cased Fortin barometer (case 128cm by 19cm by 14cm).

FORTIN STICK BAROMETER - on mahogany board with silvered vernier scale, 112cms H, 14.5cms W

A late 19th century Fortin pattern marine barometer, the silvered register reading in inches and millimetres, rack and pinion vernier scale and base well adjustment, mercury thermometer, glazed mahogany case, 123cm high overall, c.1890

FORTIN BAROMETER BY BAIRD & TATLOCK OF LONDON,no. 6592, with thermometer, on oak mount, 104cm high overall

Mounted Fortin barometer and brass Fortin barometer case.

A Fortin stick barometer.

EARLY 20TH CENTURY FORTIN-TYPE BAROMETER BY W. B. NICHOLSON LTD. OF GLASGOW,No. 5891, lacquered brass with silvered dials, with central thermometer, 102cm long, suspended on wooden plaque within glazed case

A Fortin barometer, early 20th century, concealed mercury tube with a single vernier scale, thermometer tube, secured on an oak backboard, 109cm high

Long cased fortin-type laboratory mercury stick barometer

A Fortin style barometer by F Darton & Company Ltd

A POCKET BAROMETER BY SHORT & MASON, LONDON, CIRCA 1910the 1¾in. dial signed as per title with trademarks and inscribed Compensated and TyCos, the outer scale divided for use to 12,000ft with blued steel indicator, contained within gilt brass full-hunter case with fob release; together with a pocket barometer retailed by John Barker & Co., Kensington, divided to 10,000ft, a small aneroid barometer in wooden case for wall hanging and a Fortin-type barometer (defective)(4)

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 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.

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 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 19th century Fortin-Type brass-mounted stick barometer, by Lehalle of Paris (1850 - 1900), original wood carrying case

Early 20th century Fortin-type laboratory mercury stick barometer, 114cm approx.

A 20th-century Negretti & Zambra Marine/ Fortin type Air Ministry mercurial barometer with gimbaled lacquered brass case. Numbered M4465/44/57/60/65. 89 high the actual barometer.Private collection.

A GLASS CASED TOWNSON & MERCER FORTIN BAROMETER

CF Casella & Co. Ltd., Fortin barometer having black japanned and chrome case with silvered dials, mounted on an oak backing board in a later mahogany glazed cased with original instruction booklet

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

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 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

A BRASS FORTIN-TYPE LABORATORY MERCURY STICK BAROMETERA. Gallenkamp and Company Limited, London, early 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 inscribed No. 6728 and the lower signed A. GALLENKAMP & Co. LTD, LONDON, the shaft with Vernier adjustment disc to right over applied mercury tube FAHRENHEIT and CENTIGRADE thermometer with bulb set behind the 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.The instrument 108cm (42.5ins) high; the back panel 103cm (44.5ins) high, 9.5cm (3.75ins) wide.  Provenance: The Selwyn Demmy Collection. Adolf Gallenkamp and Company Limited are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from 2, 4 and 6 Cross Street, Finsbury, London 1880-1900 and continued trading from various addresses in Finsbury, London 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 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 now generally a little dull/oxidised and dirty. Condition Report Disclaimer

A VICTORIAN LACQUERED BRASS FORTIN-TYPE LABORATORY MERCURY STICK BAROMETERM. Pillischer, London, circa 1870The instrument with slender cylindrical case pierced with a vertical slot to reveal the tube incorporating sliding Vernier collar reading against a scale calibrated in barometric inches bordering the left hand side opposing signature M. Pillischer, 88 New Bond St. London to the right, the shaft with Vernier adjustment disc to right over applied mercury tube FAHR'T and CENT'E thermometer to front, the base with part-glazed cylindrical cistern and adjustment screw to base, mounted via a brass top and base collar-brackets onto a rectangular ogee moulded mahogany panel with curved top and base.The instrument 103cm (40.5ins) high; the wall panel 112cm (44ins) high, 15cm (6ins) wide. Provenance: The Selwyn Demmy Collection. Moritz Pillischer is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working from 398 Oxford Street 1851-53 then 88 New Bond Street, London 1854-87. He was succeeded by his Nephew, Jacob.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: The tube is filled with mercury however the level is reading low (approx. 3ins) and when tipped the column stops short by around this amount indication that there is air in the tube above the mercury column. The Vernier slide is fully operational and the thermometer is in original working condition although the silvered scale is dirty/discoloured. The case retains old (probably original) lacquer finish with light to moderate patchy wear and discolouration. The wooded backboard is in good original condition albeit with a few bumps, scuffs and other very minor blemishes commensurate with age and use. Condition Report Disclaimer

A JAPANNED AND LACQUERED BRASS FORTIN-TYPE MERCURY STICK 'MOUNTAIN' BAROMETER Pasterelli and Rapkin, London, early 20th centuryThe instrument with slender cylindrical case pierced with a vertical slot to reveal the tube incorporating sliding Vernier collar reading against a scale calibrated in barometric inches ranging from 20 up to 32.5 inches to the right hand margin opposing millibar scale to the left, the shaft with Vernier adjustment disc to right and engraved signature PASTORELLI & RAPKIN, 46 HATTON GARDEN, LONDON to centre over applied mercury tube Fahrenheit and Centigrade scale thermometer with canted 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 moulded mahogany panel with curved top and base.The instrument 102cm (40ins) high; the wall panel 105cm (45.5ins) high, 9cm (3.5ins) wide. Provenance: The Selwyn Demmy Collection. The firm of Pastorelli and Rapkin are recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as being established in 1872 as a prolific maker of barometers of all types of barometers who worked from 61 Hatton Garden and 7 Great Warner Street, London in 1872 and then 46 Hatton Garden from 1873. The firm was incorporated as a Limited Company in 1901 and was still trading (in various guises) until 1988.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. The scale of the present lot is unusual in that it ranges from 20 up to 32.5 inches rather than the usual circa 26.5 to 32 inches. The facility of being able to read particularly low pressures is indicative of an instrument intended for use at high altitudes hence instruments that incorporate this feature are sometimes referred to as 'mountain barometers'.Condition Report: Instrument is filled with mercury and provides a good reading with no apparent airlocks and 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 is in good condition. Condition Report Disclaimer

A cased W & J. George & Becker LTD London Fortin Barometer. 127cm tall.

A mid 20th Century Fortin type marine barometer by Philip Harris of Birmingham in glazed oak case No'd 6408 over all height 121.5 cm x 18 cm wide x 15 cm deep

A 19th Century Ship's Fortin Barometer by O. Comitti & Son Ltd., London, in black enamelled brass, contained in a glazed ebonised case, the walnut back board set with an enamelled label ''PRESENTED BY JOSEPH PEASE, DARLINGTON 1871'', 127cm

A selection of mantel clocks, wall timepiece, wall clock cases, fortin barometer signed S & A Calderara, London, and another mercury cased barometer, etc (quantity in four boxes and some loose)

A 20th Century Brass Cased "Fortin" Stick Barometer and Thermometer, by J. Bruce Sons of Liverpool, with silvered cylindrical scale enclosing mercury tube, the lower lacquered brass cylindrical case with thermometer to front and turned cistern cover, 36ins high, and brass wall mounted gimbal for same

Fortin Barometer: reading in inches & millibars with rack & pinion Vernier reader on mahogany wall hanging, made by Darton, mercury removed for shipping

A FORTIN-TYPE BAROMETER BY PHILIP HARRIS LTD, BIRMINGHAM, CIRCA 1950 with black enamelled brass shaft with silvered scales and glass reservoir, contained within glazed wooden observation case.H:122cm

Griffin & Tatlock, Manchester Fortin barometer commonly used at Meteorological Stations to measure atmospheric pressure, 103cm height.

Japanese wall water clock, the 9.75" brass dial with twenty-four hour chapter ring enclosing a skeletonised centre over a chain attached to a falling bob in a cylinder and counterweight, within a carved wooden frame inscribed on a rounded brass plaque to the base 'Albert Colley of ye towne, Salisbury Anno Dom 1673', 30" high; also a contemporary Fortin type brass cylindrical stick barometer, signed D. Smith Limited, Southampton, 35" high (2)

Griffin & George, Fortin precision barometer with thermometer and mercury register, mounted on a wooden board, length of barometer 100cm,

A barometer . A mid 20th century mahogany cased Fortin stick barometer. Case 118 cms high. Barometer. 102 cms high. General all over wear, no key

Fortin barometer bearing the ivorine maker's plaque for J. Hicks, 8 Hatton Garden, London N473, within a stained mahogany glazed case, 50" high

A black lacquer Fortin pattern Marine barometer by Griffin & Tatlock Ltd, No 1348: the silvered register calibrated in mm and inches over main tube with thermometer and base well adjustment, on a wooden plinth within a glazed case, the case 107.5 x 16.6 x 13cm.

A late 19th century Fortin pattern marine barometer, the silvered register reading in inches and millimetres, rack and pinion vernier scale and base well adjustment, mercury thermometer, glazed mahogany case, 123cm high overall, c.1890

THOMAS ARMSTRONG & BROS LTD OF MANCHESTER; an early to mid-20th century fortin barometer, with stamped manufacturer's mark, no. 2083, with lacquered section featuring a thermometer, mounted and presented within glazed mahogany case, case approx 126  x 22.5cm.Additional InformationNot tested, no guarantee of working order. Light general wear to the barometer including scratches and pitting to the glazed upper section, some chips to lacquer and general surface scuffs and scrapes.  Further similar wear to case, some paint scratches, scuffs, dents and abrasions, small chips especially to lower section. Provenance: this barometer was used on an actively serving ship  in the mid 20th century.

Y A fine Victorian oxidised brass Fortin type mercury forecasting barometerGeorge S. Wood, Liverpool, circa 1880Constructed with central large-bore tube flanked by silvered scales applied to separate ebonised moulded panels calibrated in barometric inches 0-32 and with rack and pinion adjusted Vernier slide to right hand side, opposing an arrangement of three plates engraved with detailed forecasting predictions within fine scroll engraved margins and incorporating recording slide labelled SET AT, 9 A.M. YESTERDAY to top, the apex with further applied bridging plate signed G.S. Wood, LATE ABRAHAM & Co., OPTICIAN, LIVERPOOL, the base with substantial cylindrical cistern incorporating glazed collar enclosing ivory level pointer between screw-clamped collars over fine level adjustment screw to underside, the instrument mounted onto the backboard of a full-height half-round glazed case opening at the front, with domed cupola surmounted with a reeded gilt brass ball finial and conforming inverted dome to base, (mercury removed), 130cm (51ins) approx. high. George S. Wood is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as taking over the business of Abraham Abraham and Company located at 20 Lord Street, Liverpool in 1875 and working until 1894. 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. The combination of comprehensive scales complete with detailed observations to assist in forecasting (based on those laid-out by Admiral Fitzroy in the 1850's) and fine bowfronted case suggests that the current lot was either made to be exhibited by the maker (possibly in his own showroom) or for a wealthy client or institution.Condition Report: Instrument appears complete with the exception of mercury and two (of the three) brass cistern securing rods and screws (for holding the base of the cistern tight against the cylindrical glass sleeve) which are now unfortunately missing. The silvering to the register plates has some patchy discolouration but engraving is fine and crisp. The case is in good original condition with noticeable faults apparently only limited to the finial being a little bent. Condition Report Disclaimer

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