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Lot 581

Portuguese brass marine stick barometer, the silvered register calibrated in barometric inches with Vernier scale and inscribed 'J.J.B.L.M 16a22 R.N. Desterro Lisbon', with conforming bracket and hardwood mount, 97cm high overall

Lot 338

A Victorian ebony and gilt-brass vernier octant, by John Crichton, London, second half 19th century, the ivory inlaid scale graduated to 105°, with vernier graduated to 20° and inset ivory plaque inscribed Crichton London, with three sight shades, horizon mirror and index mirror, in mahogany case bearing makers label and Great Exhibition label of 1851, octant - 30cm high, 24.5cm wide  Ivory submission reference: W7KCCD5M    Please note that Roseberys do not guarantee the working order of any scientific instrument. Footnotes: Note: The era of modern navigational instruments was ushered in by the concurrent invention of a doubly reflecting instrument by Thomas Godfrey (1704-1749) of Philadelphia and John Hadley (1782-1744) of London in the early 1730s. Originally this instrument was referred to as 'Hadley's quadrant' after the English inventor. Today it is known as an octant, the name given it by Godfrey. The instrument proposed by Hadley and Godfrey resembled the quadrant in shape but contained an arc of only forty-five degrees, one eighth of a circle. In addition, it had two mirrors which reflected the light of the sun or a star and enabled the observer to measure altitudes (the angle between the sun, the moon or a star or planet above the horizon) up to ninety degrees. This ability to measure large angles made the instrument especially useful for celestial navigation at sea.

Lot 339

A brass radius sextant, by Elliott, London, late 19th century, with index mirrors, filters, horizon mirror eyepieces, telescope and oxidised brass lattice frame with arc with with inset silvered scale divided to 150°, vernier with magnifier, arc engraved Elliott, London, with ebony handle, in mahogany case bearing a printed label to interior for LILLEY & REYNOLDS Ltd., sextant - 25.3cm wide, 23.6cm deep          Please note that Roseberys do not guarantee the working order of any scientific instrument.     Footnotes: Note: A sextant is a doubly reflecting navigation instrument used to measure the angle between any two visible objects. The principal of the instrument was first implemented around 1730 by John Hadley, 1682-1744, and Thomas Godfrey, 1704-1749, but it was also found later in the unpublished writings of Isaac Newton, 1643-1727.The firm of Elliott Brothers of London was founded by William Elliott (working 1807-53). In 1850 he formed a partnership with his sons, Frederick & Charles (Elliott & Sons) and the firm became Elliott Bros. from 1854. They became successors to Watkins & Hill by 1856. The firm much later became part of GEC after moving progressively into electrical equipment and automation. It is now part of BAE Systems. 

Lot 3211

Hezzanith Instrument Works Sextant 7" radius, black lacquered, with bimetallic Vernier scale in original case with Certificate of Examination dated 13 October 1928Clients brother took the sextant to Falkland Islands in service during the invasion

Lot 3210

Heath & Co. Sextant 6 3/4" radius with Vernier scale (cased) together with Cooke, Troughton & Simms Binocular Microscope, black finish stamped 'INQS' (cased) (2)

Lot 164

A 19th century rosewood marine barometer and a similar period mahogany marine barometer with 'Improved Sympiesometer' and gimballed wall mountthe first signed for Whyte Thompson & Co., Glasgow & So. Shields, the second signed for signed for Jewitt & Co. 35 South Castle Str., Liverpoolthe first with arched top with suspension loop over a slender trunk with twin recording knobs and mercury thermometer, terminating in a weighted brass cistern cover, the angled ivory scales marked for Yesterday and Today, each with a rack-and-pinion vernier, the second with carved foliate scroll cresting over a substantial trunk with foliate carving to a matching base and heavy brass cistern cover, the throat set with a folding brass gimbal wall mount, the 'Improved Sympiesometer' with mercury thermometer, recording disc and shortened tube with coloured oil, the sliding scale measuring from 27' to 31' operated via a rack and pinion at the front, the main barometer dial of ivory and marked for Yesterday and Today with twin verniers, further signed IMPROVED TUBE, 95cms high and 99cms high approximately (2)Footnotes:The item within this lot containing ivory has been registered in accordance with the Ivory Act (Section 10). Whyte Thompson & Co Ref: TZZRG242Jewitt & Co Ref: CA24ZVKRThis lot is subject to the following lot symbols: TP Y ФTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.Y Subject to CITES regulations when exporting items outside of the UK, see clause 13.Ф This lot contains or is made of ivory and cannot be imported into the USA or any country within the EU.For further information on this lot please visit Bonhams.com

Lot 165

A George III mahogany stick barometerthe dial signed G Braggio, Chelmsfordthe moulded swans neck pediment centred by a brass urn finial, over an opening hood door and waisted trunk terminating in a circular turned cistern cover, the signed silvered dial with calibrated sliding vernier and seven weather predictions to the 27-31' scale, above a mercury thermometer with arched silver dial, 102cm high This lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 169

A good early 19th century flame mahogany stick barometersigned Barrauds, Londonthe concave moulded cornice over a veneered trunk with moulded edge terminating in a distinctive ebonised urn shaped cistern cover on a shaped surround, the signed silvered dial with 27-31' scale with rack-and-pinion vernier, 96cms highFor further information on this lot please visit Bonhams.com

Lot 704

An Oak Admiral Fitzroy Storm Stick Barometer, signed Negretti & Zambra, Holborn, 122 Regent St W & 45 Cornhill, London, circa 1870, arched pediment, concealed double vernier scale pottery dial signed, thermometer box, square shaped cistern cover105cm highTop edge of the pediment with one dent, case edges with minor chips, main dial with one small screw missing to the bottom left hand corner, thermometer dial with crazing marks, mercury is visible in the tube.

Lot 639

Victorian rosewood marine stick barometer, the arched and canted three-piece ivory scale reading from 27 to 31 inches of pressure, with Remarks and vernier (lacks adjusting knob), the slender trunk, drilled for gimbal mounting, with cased Fahrenheit and Centigrade mercury thermometer, over turned brass cistern cover, 92cm highSold with APHA licence: ZHNCDDJ4

Lot 17

A FINE GEORGE III MAHOGANY BAYONET-TUBE MERCURY STICK BAROMETER WITH HYGROMETER AND THERMOMETERSAMUEL TOULMIN, LONDON, CIRCA 1775The caddy moulded case with open triangular pediment above hygrometer with independent adjustment for the beard pointer via a brass turn-screw set beneath, over inset silvered vernier scale with curved lower angles and calibrated in barometric inches to the right hand margin opposing weather observations to the left, the upper margin signed Toulmin Strand London, the trunk inset with silvered arched Fahrenheit scale mercury tube thermometer with domed brass protective cover to the bulb and decorative engraved border, the rounded base with circular moulded cistern cover and brass level adjustment screw to underside.109cm (43ins) high, 17cm (6.75ins) wide. Provenance: Property of Harry Taft Hayward (1868 - 1930) and Edith Wires (1872 - 1962) Skyring House, Worthing, and thence by descent.  Samuel Toulmin is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from Strand, London 1757-83. Condition Report: Tube is present and appears intact however almost all of the mercury has gone. The cistern cover is securely fixed hence we are unable to establish whether the cistern is complete or the condition of the concealed part of the tube. The lever adjustment screw is present hence it is most likely the cistern is present but is no longer fluid-tight. The hygrometer is complete and the adjustment action is operational. The thermometer is complete, the tube filled and providing appropriate reading. The silvered scales have overall browning to their lacquer otherwise are in sound condition albeit with some very slight wear to the engraving (no doubt from previous re-silvering). The case is in sound original condition however the pediment is currently detached and is lacking the return mouldings to the sides. There is also a loss to the lower tip of the side 'corbel' moulding (to the left-hand side) as well as some wear/chips to the extremities of the mouldings in general. The trunk has some veneer shrinkage cracking to the front otherwise the case is in original relatively untouched condition with faults limited to minor bumps, scuffs, shrinkage and wear commensurate with age and use. Condition Report Disclaimer

Lot 256

Maspoli of Hull - Late 19th century mercury cistern stick barometer, mahogany case with a round top and circular turned cistern cover with circular ivory inlay and adjustment screw, engraved register with predictions and adjustable vernier, with mercury thermometer and Fahrenheit scale. Tube with mercury present. This item has been registered for sale under Section 10 of the APHA Ivory ActDimensions: Height: 96cm Condition Report:Ivory Act - Submission reference: W7E1Z5DN

Lot 842

BRADY & MARTIN LTD. NEWCASTLE ON TYNE A 19TH CENTURY ROSEWOOD STICK BAROMETER the plain rectangular case with chamfered sides and arched pediment above a rounded brass bezel enclosing an angled double calibrated ivorine dial and thermometer scale enclosing a central tube with adjusting vernier.91.5cm high

Lot 13

Comitti, London a reproduction stick barometer the mahogany curved-top case having a turned cistern cover to the base, the silvered dial with usual barometric markings and sliding Vernier scale, an inset thermometer and signed O. Comitti and Son, London, complete with original signed box and packing, height 98cm.

Lot 24

Rowell, Oxford a mahogany stick barometer the bone dial with usual barometer markings, Vernier scale and inset thermometer, the mahogany curved-top case with visible tube and turned cistern, height 90cm.

Lot 1249

An early Victorian mahogany stick barometer, the dial with vernier scale and inscribed 'C.W. Dixey Optician to the Queen 3 New Bond St London', the bowfront case with moulded pediment above a glazed panel and thermometer panel to trunk, height 94.8cm (lacking thermometer, replaced cistern cover). Note: Charles Wastell Dixey is a recorded London barometer maker, working from his New Bond Street address between 1825 and 1860.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.

Lot 24

Y AN ASHFORD SPECIMEN MARBLE TABLE THERMOMETER LATE 19TH CENTURY With ivory vernier scale 20cm highTogether with a serpentine marble tazza, probably Cornish, 12.5cm high, 14cm diameter De minimis license ref: DBD479WKProvenance:The Fulwood CollectionCondition Report: The black marble to the thermometer has chips and losses to the angles, the ivory is discoloured, as in the catalogue description we have a licence in order to offer for saleThe mercury tube is complete and intact and there is a reading being displayedThe tazza appears to be in good condition overall - please request additional images for a view of thisPlease refer to additional images for visual reference to conditionCondition Report Disclaimer

Lot 113

A good late 18th century ebony inlaid mahogany bow fronted stick barometerTroughton, LondonThe swan neck pediment over a bow fronted glass and long trunk with flame veneer to a base with canted corners inlaid with ebony lozenges framing the ebonised urn shaped cistern cover. The signed silvered dial with seven weather predictions and rack-and-pinion vernier to the 27 to 31 inch scale. 100cms (3ft 4ins) highFor further information on this lot please visit Bonhams.com

Lot 112

A rare mid 18th century mahogany stick barometerF. Watkins, LondonThe shaped top with three brass ball finials over an arched cornice supported on brass-mounted Doric columns over a long trunk with visible tube flanked by moulded edges, terminating in a shaped turned hemispherical cistern cover, the two-part signed silvered dial engraved with seven weather predictions and manual vernier to the 28 to 31 inch scale 1.01m (3ft 4ins) highFor further information on this lot please visit Bonhams.com

Lot 116

A good and rare late 18th century mahogany stick barometerDollond, LondonThe broken architectural cornice centred by an urn finial over a moulded border to the turned hemispherical cistern cover, a wheatbeard hygrometer inset to the top over a signed silvered dial marked with seven weather predictions and manual vernier to the 28 to 31 inch scale, the trunk set with a 21 inch mercury thermometer with silvered centigrade scale terminating in a protective brass cover over the turned cistern cover, the trunk with moulded edge throughout 1.09ms (3ft 7ins) high. For further information on this lot please visit Bonhams.com

Lot 322

A Portuguese brass marine stick barometer, the silvered register calibrated in barometric inches with Vernier scale and inscribed 'J.J.B.L.M 16a22 R.N. Desterro Lisbon', mahogany mount, 110cm high overall

Lot 521

A George V. E.R. Watts & Son marine sextant having an 8 inch radius, the brass vernier scale marked E.H. Dyke No. 148, in a fitted mahogany case with Watts trade label and National Physical Laboratory labels to the underside, the outer lid with brass plaque naming E.H. Dyke, flanked by recessed brass handles, w,27, d.27, h.14cm.

Lot 746

A 19th century mahogany stick barometer, by H Comwng, Kings Road Chelsea, with an ivory thermometer and vernier scale. 94 cm high. NOTE: This item has been assigned an ivory exemption certificate X3K6A74P.

Lot 745

A Victorian Gothic style oak stick barometer, by J Somalvico & Co, 2 Hatton Gardens London, with vernier scale and cased thermometer. 99 cm high. NOTE: This item has been assigned an ivory exemption certificate GEPQV88L (see illustration).

Lot 2079

A Portuguese brass marine stick barometer, the silvered register calibrated in barometric inches with Vernier scale and inscribed 'J.J.B.L.M 16a22 R.N. Desterro Lisbon', mahogany mount, 110cm high overall

Lot 5

A Large Smith & Beck No.1 Circuit Stage Binocular Microscope A Large Smith & Beck No.1 Circuit Stage Binocular Microscope, English, dated 18 September 1884*, signed to the foot ‘R & J Beck LONDON’ and ‘N°12010’, the microscope stands on a flat tripod foot with rotating centre engraved in degrees, with two supporting pillars architectural in style, both terminating in trunnions supporting the microscope body, with large plano-concave mirror on swing-arm and sliding collar, sub-stage condenser holder with screw X & Y adjustment, goniometer control with degrees engraved, and rack-and-pinion focusing, a large goniometer circuit stage** allowing for full rotation of the specimen, supported on German silver mount with vernier scale to front, stage with X & Y control, swept limb with single accessory holder, course focus to the top, fine focus mechanism acting on the rack, Wenham prism in pull out/in drawer, with one case of accessories which contains: objectives all signed ‘R & J Beck’, 1 1/2in, 2/3in/ 4/10in, 1/5in, 1/8in. A pair of low, medium & high power binocular eyepieces. An achromatic condenser with a wheel of stops. A stage bulls-eye. A stage side reflector. A side reflector in a can. An erector lens. A large& small live box. Two glass stages. A compressor. Two Lieberkühns. Stage forceps. A Wenham-type parabolic condenser. An eyepiece lucida. Micrometer Glass. Double nosepiece. Specimen Holder. Dark Well & Holders. and other items the microscope also has a substage set of selenite filters There is no case only the microscope and the accessory set. Note: *From the Beck records. ** The circuit stage was an expensive optional extra for the No.1 microscope. It meant that the stage was further away from the limb of the microscope so it could be fully rotated, the limb is bigger as the body tube is also further out. This is a very rare feature.

Lot 77

Sextant By Sewill (Maker To The Royal Navy, Liverpool) 7 1/2" radius, with Vernier scale, cased with eye pieces with label to front 'Captain W E Williams m/v Herdsman W. Indian Dock London'

Lot 1252

A Victorian mahogany stick barometer, the silvered rectangular dial with vernier scale and inscribed 'Bithray Royal Exchange, London', the case with swan neck pediment and ivory finial, the trunk fitted with a mercury thermometer above a turned cistern cover, height 97cm. Note: a non-transferrable ivory exemption certificate has been granted for the sale of this item.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.

Lot 695

Comitti & Son, London a reproduction stick barometer the mahogany case having decorative inlaid stringing, an architectural pediment and turned cistern cover to the base, the silvered dial with usual barometric markings and sliding Vernier scale, an inset thermometer and signed O. Comitti and Son, London, height 98cm.

Lot 299

Ø A 17½IN RADIUS VERNIER OCTANT, DUTCH, CIRCA 1755the mahogany 'T' frame with arc sandwiched between brass plates, the front divided to 90º, brass index arm, vernier scale with central '0', arm stop, fore and aft pinhole sights, mirrors and two pad rests -- 20in. (51cm.) high overall; together with a 13½in. radius example in ebony signed Heather London (old losses and wear overall), IDN: MJLVS1NJ(2)Dutch: inset maker's plate missing, scales much worn, but just readable; index arm loose but secure, main pinhole sight bent, lacking interchangeable shades, missing one pad foot;Heather: both pinhole sights bend, lacking mirrors (plates only), lacks shades, lacks pencil, no case.

Lot 300

Ø AN 11½IN. RADIUS VERNIER OCTANT BY SPENCER, BROWNING & RUST, LONDON, CIRCA 1840the ebony 'T' frame with inset ivory maker's plate and scale marked 'SBR' to centre, brass index arm, pinhole sights and shades, contained within stepped keystone case with decorative lock plate -- 13½in. (34.5cm.) wide, IDN: YH9XLF88; together with a surveying level for the Board of Ordinance; and a telemeter in a leather case(3)

Lot 311

A CIRCULAR PROTRACTOR BY F. ROBSON & CO., NEWCASTLE ON TYNE, CIRCA 1900the 8½in. protractor constructed in lacquered brass with inset silvered scale, signed on the clamping arm as per title, opposing vernier arms with folding extensions, contained in plush-lined box of issue -- 10in. (25.5cm.) wide

Lot 193

A good late 18th century chequer-strung mahogany stick barometerthe dial signed for Joshua Cox, Londonthe moulded swan neck pediment with brass acorn finial over an opening hood door and waisted trunk with visible tube framed by a herringbone veneer and chequer-strung border, terminating in a circular turned cistern cover with fan medallion, signed silvered dial with mercury thermometer, manual vernier and seven weather predictions to the 27-31' scale, 100cm high This lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 313

A George III crossbanded mahogany, boxwood and ebony strung stick barometerthe dial signed Stevenson, Derbythe broken pediment centred by a slender brass urn finial over an opening hood door and waisted trunk with visible tube flanked by herringbone veneers, terminating in a circular turned cistern cover, the signed silvered dial with sliding vernier and seven weather predictions to the 27-31' scale, 101cm high This lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 1127

Negretti & Zambra of London - c1860 Victorian carved oak cistern tube storm barometer, with arch top glazed front ceramic scale inscribed �NEGRETTI & ZAMBRA OPTICIANS TO HER MAJESTY�LONDON� to panel above, double vernier canted scales inscribed with barometric air pressure in inches and weather predictions, rectangular trunk with vernier setting discs above a boxed Fahrenheit and Centigrade scale spirit thermometer, the base with carved cistern cover. Dimensions: Height: 100cm 

Lot 1290

A Victorian oak stick barometer, the ivorine dial with vernier scale and signed 'J. Webster 189 St. John Road Clerkenwell London', the case with dome top and bevelled glass panel above a glazed mercury thermometer to trunk and turned cistern cover, height 93cm.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.

Lot 1294

A George III mahogany stick barometer, the silvered dial with vernier scale and alcohol thermometer and inscribed 'Manticha', the case with broken arch pediment above glazed door and inlaid chequer banding, visible mercury tube and turned circular cistern cover, height 95.5cm.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.

Lot 199

Y GEORGIAN LABURNUM STICK BAROMETER LATE 18TH/ EARLY 19TH CENTURY the lancet case outlined with fruitwood banding, the ivory vernier scale above a mercury vial and hemispherical cistern coverDimensions:10cm wide, 93cm highNote: Note: Please be aware that this lot contains material which may be subject to import/export restrictions, especially outside the EU, due to CITES regulations. Please note it is the buyer's sole responsibility to obtain any relevant export or import licence. For more information visit https://www.defra.gov.uk/ahvla-en/imports-exports/cites/With non-transferable CITES self-certification number D97H24B2

Lot 202

SCOTTISH STICK BAROMETER, ALEXANDER PATERSON, BANFF EARLY 19TH CENTURY the broken arch pediment above a silvered brass vernier scale signed 'Alexander Paterson Fecit/ Banff', above a slender trunk with visible mercury filled tube terminating in a hemispherical cistern coverDimensions:98cm high

Lot 253

An early 19th Century mahogany and chequered strung stick barometerthe dial signed for Francis Pellegrino, Londonthe swans neck pediment centred by a slender ivory urn finial over an opening hood door and waisted trunk with visible tube terminating in a circular turned cistern cover, the silvered dial signed F. Pellegrino, Fecit ,with mercury thermometer and sliding vernier with seven weather predictions to the 27-31' scale, 96cm high Footnotes:The item within this lot containing ivory has been registered in accordance with the Ivory Act (Section 10). Ref TESMEX8UThis lot is subject to the following lot symbols: TP Y ФTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.Y Subject to CITES regulations when exporting items outside of the EU, see clause 13.Ф This lot contains or is made of ivory and cannot be imported into the USA or any country within the EU.For further information on this lot please visit Bonhams.com

Lot 462

A Jesse Ramsden Brass Theodolite, English, Late 18th century,signed Ramsden, London, E.R, the telescope with rack-and-pinion focusing, supported by two brackets above, half-circle of degrees, above circular platform with 360-degree silver scale and vernier, two bubble levels mounted at right angles, magnetic compass, staff-head mount with four levelling screws, in fitted mahogany case, together with folding tripod, the instrument 13 1/2in (34cm) high Footnotes:Jesse Ramsden (1735-c.1800) was a leading figure in the design and production of mathematical instrument makers, since starting his London business in 1762. His Theodolite design was used on numerous high precision surveys from 1784, and contributed to his election to the Royal Society in 1786. In addition to Theodolites, Ramsden built balances, barometers, sextants, and other precision instruments. Ramsden had William Cary as an apprentice, before Cary went into the globe making business with his brother John Cary, the workshop situated further along the Strand from Ramsden's.For further information on this lot please visit Bonhams.com

Lot 465

A Troughton & Simms Brass Theodolite, English, Mid-19th century,signed TROUGHTON & SIMMS LONDON, the telescope with rack-and-pinion focusing, mounted on two brackets above half-circle of degrees, with silver scale and vernier, on staff-head mount with compass, two bubble levels mounted at right angles, and 360-degree silver scale with vernier, on four level screws, in original fitted case, together with folding tripod, the instrument 11in (28cm) high Footnotes:The firm Troughton & Simms was established in 1826, when the renowned instrument maker Edward Troughton (1753-1835) partnered with William Simms (1793-1860). The business continued to produce precise surveying and navigational instruments throughout the 19th century, including telescopes, Theodolites, and surveyor's levels.For further information on this lot please visit Bonhams.com

Lot 79

An early 18th century French brass mounted and inlaid ebony barometerthe dial signed C. Leret a Rouen, circa 1720the arched case with moulded borders surmounted by three turned urn finials, the line inlaid trunk with visible tube flanked by a two part signed foliate cut and-engraved dial, one side with eight weather predictions, the opposing side with sliding vernier and scale reading from 26-28, terminating in a canted stepped base inlaid with a foliate engraved oval coat-of-arms within a cut scrolling border on bun feet, and raised on a matching fixed tapering bracket with turned and knopped terminal, 122cm high This lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 81

A George III brass mounted mahogany stick barometerthe arched moulded cornice with three onion spine finials, over an opening hood door and waisted crossbanded trunk, the visible tube beneath a lattice pierced grill, the turned bulbous cistern above a spiral turned knopped terminial, the arched silvered dial with sliding vernier flanked by seven weather predictions and the 27-31' scale, 100cm highThis lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 83

A George III mahogany and boxwood strung stick barometerthe dial signed Pozzi & Co.the broken pediment centred by a slender brass urn finial, over an opening hood door and waisted trunk with visible tube terminating in a circular turned cistern cover, the signed silvered dial with alcohol thermometer and sliding vernier with seven weather predictions to the 27-31' scale, 99cm highThis lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 86

A large George III mahogany, marquetry inlaid and chequer strung stick barometerthe dial signed Chas Ciano, Fecitthe broken pediment centred by a brass artichoke finial, over a silvered hydrometer within four fan inlaid corners, the opening hood door and waisted trunk with twin foliate oval patera terminating in a circular turned cistern cover with brass knop terminal, the signed silvered dial with part visible tube, sliding manual vernier and seven weather predictions to the 28-31 scale above a visible mercury thermometer with silvered dial, 112cm high approximatelyThis lot is subject to the following lot symbols: TPTP For auctions held in Scotland: Lots will be moved to an offsite storage location (Constantine, Constantine House, North Caldeen Road, Coatbridge ML5 4EF, Scotland, UK) and will only be available for collection from this location at the date stated in the catalogue. Please refer to the catalogue for further information.For all other auctions: Lots will be moved to an offsite storage location (Cadogan Tate, Auction House Services, 241 Acton Lane, London NW10 7NP, UK) and will only be available for collection from this location at the date stated in the catalogue. Please note transfer and storage charges will apply to any lots not collected after 14 calendar days from the auction date.For further information on this lot please visit Bonhams.com

Lot 9025

Travelling microscope by C Baker, London No.16534 with Chesterman vernier scale H33cm in wooden case and another No.16468, boxed (2)

Lot 653

LATE 19TH CENTURY REFRACTING ASTRONOMICAL TELESCOPE BY NEGRETTI & ZAMBRA,circa 1850, the 170cm body tube with rack and pinion focusing, angle fine screw adjustment and clamp, star finder, and supported on an equatorial mount, with hour scale divided into 30-minute sub-divisions, vernier scale with magnifier and arm with fine screw adjustment, north south declination scale divided 0-90°, in four quadrants, vernier scale magnifier and counter balance weight, supported on tapered brass column on an oak tripod, with dust cap, eyepiece cover and contained over three hardwood cases with extension tube, six eyepieces and two angled extension tubesNote: Image included now showing the telescope as was set up in situ.

Lot 238

Longines. Rare et insolite chronographe stop watch à rattrapante en acier remontoir au pendantLongines. A rare and unusual stainless steel keyless wind open face 1/10th split second chronograph stopwatch Reference: 8350-1Date: Circa 1965Movement: Jewelled manual windDial: Silvered, black Arabic numeral hour markers, black inner minute divisions with 5 minute markers, white outer 1/10th split second divisions, subsidiary dials at 6 and 12 for seconds and 30 minute recording, black pointed baton hands, centre orange arrow tipped chronograph hand with yellow vernier scaleCase: Polished round, screw down back, inner cap, start/stop button in the stem at 12, split second button at 11, quick set button at 1, No.P 50918192Signed: Case, dial & movementSize: 66mm Accompaniments: Fitted Longines leather box with neck strapFor further information on this lot please visit Bonhams.com Movement: Runs when powered at time of cataloguing, chronograph functions work wellDial: GoodHands: GoodGlass: GoodCase: Surface scratches throughoutLeather box: GoodNeck strap: Overall good We do not test any watches for their accuracy and as such timekeeping cannot be guaranteed. We advise that if you are bidding on a watch, that you or your agents are completely satisfied with the condition of the lot. We recommend that all watches are serviced and polished after the sale as they are handled throughout the viewing period. Please note that although Bonhams endeavour to include reference to any replacement parts within our Condition Reports we cannot confirm that each individual element of the watch is original or that, if replaced, the replacement has been made using original manufacturer's parts.

Lot 100

J Coombes (Devonport) Sextant no.7413, brass with Vernier scale in original mahogany case with two labels: Certificate of Examination from the National Physical Laboratory dated January 1908 and one for George Lee & Son (Portsmouth), case also has brass plaque to lid 'W A Dumbleton RN'With non-transferable standard ivory exemption declaration number 34ZGD3RV

Lot 101

Kelvin & Hughes The Sextant cracked black finish with bimetallic Vernier scale and electric lamp, in case with Examination certificate dated 2/8/57

Lot 104

Thomas Jones (London) Sextant brass with a bimetallic Vernier scale, with two eyepieces (appears to lack a third), casedEngraved 'Thomas Jones 62 Charing Cross, London'

Lot 106

Various Instruments including Topcon AT-F6 theodolite, Stanley clinometer with Vernier scale, Cowley Automatic level and three Planometers

Lot 98

Hezzanith Instruments Works Sextant cracked black finish, Vernier scale and Bakelite handle (surface corrosion) in fitted case with Examination Certificate dated 12th January 1965; together with four pairs of Binoculars/Opera Glasses, slide rules and a wine thermometer

Lot 99

Hughes & Son (Husun) Sextant cracked black finish with bimetallic Vernier scale and electric lamp, in case with Examination certificate dated 18/10/1960

Lot 350

Reproduction mahogany stick barometer with silvered scale and vernier, 96cm high

Lot 369

A ROSEWOOD BOWFRONT STICK BAROMETER BY STEBBING & CO., SOUTHAMPTON, EARLY 19TH CENTURY the ivory gauge with vernier scale inscribed 'Stebbing & Co, Southampton', with bone adjusters, thermometer and ebonised cistern cover 97cm high *This item is offered for sale in accordance with the Ivory Act 2018 and has been assigned an exemption certificate.

Lot 370

A GEORGE III ROSEWOOD STICK BAROMETER BY HARRIS, BRIXTON, C.1800 with an ivory thermometer and vernier scale and turned reservoir cover, signed 'Harris, 461, East Brixton' 90.5cm high *This item is offered for sale in accordance with the Ivory Act 2018 and has been assigned an exemption certificate.

Lot 271

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

Lot 6185

Travelling microscope by C Baker, London No.16534 with Chesterman vernier scale H33cm in wooden case and another No.16468, boxed (2)

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