We found 1310 price guide item(s) matching your search

A Regency brass swinging-arm protractor Thomas Jones, London A Regency brass swinging-arm protractor Thomas Jones, London, early 19th century The 7 inch wide D-shaped plate with silver scale insert calibrated for degrees to circumference and signed Thomas Jones, 62 Charing Cross London to lower edge, fitted with brass swing-arm pivoted at the centre of the arc incorporating aperture with vernier insert over the scale and extended rule terminating with a short axis-centre marking edge, in original mahogany box applied with paper trade label Thomas Jones (Pupil of Ramsden) ASTRONOMICAL, and, Philosophical, INSTRUMENT MAKER, To His Majesty & , the hon'ble Board of Ordnance., 62 Charing Cross, LONDON to inside of lid, the box 27.5 (10.75ins) wide. Thomas Jones is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as apprenticed to Jesse Ramsden in 1789 for whom he is believed to have worked until setting up on his own at 120 Mount Street, Berkeley Square, London in 1806. He operated from several other London addresses including 62 Charing Cross from 1816 and took his son of the same name into partnership in 1831 (which only lasted four years). His final address is recorded by Clifton as being at 4 Rupert Street, Coventry Street, London where he is noted as working 1851-59.

Early 19th Century Mahogany cased stick Barometer, unsigned, the shaped pediment over a single hinged glazed door to carved floral and foliate ears and plain trunk with visible tube and demi-lune cistern cover to a paper scale of 28 to 31 and marked for Summer and Winter with twisted wire Vernier scale, height 36 =

A cased black lacquered and brass sextant by Heath & Co, of New Eltham, London, S.E.9 the pierced frame with pivoted arm mounted with mirror and aperture, with vernier for the signed and silvered inset scale,to 130°, with a plaque to the arm "Hezzanith" Endless Rapid Reader, Automatic clamp, the mahogany case with accessories and Hezzanith Observatory Works test certificate dated September 1953, case 28cm wide

PETER PRIMAVESI, HOLBORN, EARLY NINETEENTH CENTURY INLAID MAHOGANY STICK BAROMETER, the engraved silvered scale registering from 27-31, adjustable vernier and mercury thermometer, signed, housed in a case with swan neck pediment and brass finial, above an exposed tube to the trunk and oval fan inlay to the oblong cistern cover, the whole outlined in boxwood, 38 1/22 (97.8cm) high

A Victorian oak cased stick barometer and thermometer by Armstrong Brothers, 88 Deansgate, Manchester, with twin white opaque scale and vernier and with mercury thermometer, in heavy oak case with arched top and carved with leaf paterae, 45ins high

An ebony and brass octant, the scale divided 110 - 0, signed on the cross arm E & G. W. Blunt, New York, pin hole sights, twin mirrors, three shades, the index arm with vernier scale, tangent screw and clamp, 13in (33cm) radius.

A Negretti and Zambra ebony octant, mid 19th century, with an ivory scale, the brass index arm with vernier, 24.5 by 31 by 8cm high, in a contemporary oak box, bears label for 'William Gerrard Chronometer, Patent Lever Watch and Nautical Instrument Maker, Newton's Head, Liverpool, 30 by 34 by 10cm high, together with a parallel rule with label Cooke, Troughton and Simms Ltd. London, York and Capetown, 23cm.

A 19th century rosewood inlaid mother of pearl stick barometer, with angled scale, adjustable vernier and mercury thermometer. Height 37 ins (see illustration).

Porthouse of Penrith, "The Great Barometer", with broken triangular pediment above the glazed door enclosing the paper label and adjustable vernier scale, the case boxwood strung and with exposed tube and turned strung cistern cover. Height 39.5 ins, case width at narrowest point 4.25 ins (see illustration).

A 19th century rosewood inlaid mother of pearl stick barometer, with angled scale, adjustable vernier and mercury thermometer. Height 37 ins (see illustration).

A clockwork First World War brass sight signed Allan, London with a hinged magnifier, silvered vernier scale, brass screw top cover and a tin outer case, 7cms diameter

A 19th Century Oak Stick Barometer, the arched top applied with Ivorine twin scale and Vernier central Mercury tube, terminating in a moulded Cistern, inscribed Simpson Yarmouth (losses), 36? high

An early 19th Century Rosewood Stick Barometer, Barnad-Ryde, the plain case fitted with a two part Ivory scale marked form 27 to 31 with a sliding Vernier and a single scale thermometer and visible tube with fitted demi-lune cistern cover, height 35 ½?

A German silver protractor by REYNOLDS Birm with vernier scale in orig mahogany box G+

A 5IN. VERNIER SEXTANT BY TROUGHTON & SIMMS, LONDON, CIRCA 1820, the polished brass frame with arc signed as per title and inscribed silvered scale divided to 150º, vernier with clamp and magnifier, index arm engraved CLYDE ENGINEERS’ OFFICE No. 2, threaded wooden handle contained in fitted keystone box complete with sighting tubes and filters -- 8 x 9¾in. (20.3 x 24.5cm.)

Ø, AN 11IN. RADIUS VERNIER OCTANT BY SPENCER BROWNING & CO, LONDON, CIRCA 1850, the wooden frame with inset scale stamped ‘SBR’ at centre and divided to 105º, makers’ plate signed as per title, pencil, lacquered-brass index arm, pinhole sights, mirrors and shades, contained within stepped keystone box with embossed lock plate and key -- 14in. (35.5cm.) high; together with a polished ‘Mates’-pattern sextant by Hughes, (2)

Job & Co (Cannon St., London) Brass Pocket Sextant with Vernier scale 3``, 7.5cm diameter together with another instrument by Apps with clockwise and anti-clockwise scale 0-90 (2)

W E Harrison, Hull Brass And Ebony Octant, with ivory inlay and Vernier scale

Brass Sextant 19th Century with Vernier scale in mahogany box

A Regency mahogany stick barometer, the worked case with thumb-nail mouldings and moulded demi-lune cistern cover, with brass cap and straps to mercury tube, silvered and engraved register plates with sliding Vernier scale and signed West 83 Fleet Street/London, 91.5cm Further Information tube needs topping up otherwise ok

Edwardian Stanley, London brass body drum pocket sextant, silvered scale with hinged magnifier and vernier and contained in its original leather case with shoulder strap. 8cm diam.

Edwardian Stanley, London brass body drum pocket sextant, silvered scale with hinged magnifier and vernier and contained in its original leather case with shoulder strap. 8cm diam.

A 19th century mahogany cased stick barometer by L Pozzi & Co of Hereford, silvered dial bearing Vernier scale and thermometer, the feathered case with ebony stringing, 96cm long.

A Camilli, Holborn, mahogany cased stick barometer, the silvered dial with Vernier scale and barometer, 91cm long.

A late 20th Century George III style mahogany stick barometer, the ivorine dial with vernier scale and inscribed `I. Blatts, Brighton`, the case with arched surmount and turned cistern cover, height approx 91cm.

A French mariner’s lacquered brass hand-held sighting compass, Doninelli, Nice, late 19th century, Of cylindrical form with top surface inset with a silvered compass engraved with the eight cardinal points within outer scale calibrated in degrees set behind bevelled glass, the cylindrical body divided into two sections with the lower section incorporating inset silver collar scale divided in degrees rotating against a vernier scale engraved to a similar collar to the lower margin of the upper section, with two sets of pierced wire sights set at ninety degrees to each other and signed Doninelli a Nice, the lower section with single sight, rotation adjustment screw to underside and tapered brass handle, diameter 8cm (3ins approx.); with an English black japanned brass sextant, H. Hughes and Son Limited, London, early 20th century, the diamond lattice-pierced six inch radius frame with pivoted arm applied with HUSUN trademark label and mounted with mirror opposing aperture for the brass vernier scale, the main scale signed H. HUGHES & SON LTD LONDON beneath number 28394, the frame fitted with fixed sighting tube opposing mirror with wooden grip handle and three feet to underside, 27.5ins (10.75ins) wide overall; and a patinated brass aneroid surveyor’s barometer, Stanley, London, early 20th century, with circular silvered scale calibrated in barometric inches within another calibrated in feet with vernier adjusted via knurled crown to outer track, with fine blued steel pointer and inscribed Surveying Aneroid Compensated, STANLEY, LONDON, 2023 to the recessed centre, the exterior with pivoted vernier lens and suspension loop incorporating vernier adjustment crown, diameter 8cm (3ins approx.), with original protective leather case, (3)

A fine George III mahogany bowfronted mercury stick barometer, Troughton, London, circa 1820, With swan neck pediment above silvered vernier scale calibrated in barometric inches and with the usual weather observations beneath signature Troughton, London to upper margin within moulded surround for the curved glass, the flame figured trunk of bowed profile and with ebony strung edges with convex throat moulding and vernier adjustment screw to upper section, the base with turned ebony half vase cistern cover flanked by lozenge inlaid canted angles with level adjustment to the cavetto moulded underside, (glass lacking), 100cm (39.5ins) high. The current lot was probably made by Edward Troughton who is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as first working in partnership with his brother, John from several addresses in London (including Queen’s Square, Bartholemew and 136 Fleet Street) from 1788 until John’s death in 1804. Edward continued alone from their Fleet Street address until 1826 when he formed a partnership with William Simms which lasted until after Troughton’s death in 1831. Edward Troughton was apparently quite a character choosing to live a semi-reclusive life and was characterised by his snuff-stained wig and ear trumpet! However his skill both in the manufacture and design of fine instruments led him to be awarded lucrative contracts from The East India Company, The Board of Ordnance, the Royal Observatory and The Board of Longitude.

A fine George III mahogany mercury stick barometer with hygrometer, Edward Nairne, London, late 18th century, The caddy moulded arch-top case inset with circular glazed hygrometer with independent adjustment for the hygrometer beard pointer via a brass turn-screw set beneath operating a pair of visible geared wheels fitted to the rear of the instrument, over concave-topped inset silvered vernier scale calibrated in barometric inches to the right hand margin opposing weather observations to the left, the upper margin with engraved signature Nairne, London, the conforming caddy moulded figured mahogany veneered trunk with exposed tube above rounded base applied with half-sphere cistern cover with moulded cylindrical upstand and narrow band to waist, the underside with brass level adjustment screw, 104cm (41ins) high. 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 in the bore of the mercury tube which served to dampen the oscillation of the mercury; he was elected to the Royal Society in the same year. In 1774 he formed a loose partnership with his former apprentice Thomas Blunt, perhaps for mutual convenience as Blunt’s premises were next door to Nairne’s at 22 Cornhill. Edward Nairne is believed to have retired to Chelsea in 1801 and died in 1806.

A fine George III mahogany mercury stick barometer, John Bleuler, London, late 18th century, The arched silvered vernier scale calibrated in barometric inches to the right hand margin opposing weather observations to the left, the upper margin with engraved signature J. Bleuler, London set behind moulded arch-glazed door, the caddy moulded figured mahogany veneered trunk with exposed tube above rounded base applied with half-sphere cistern cover with moulded cylindrical upstand and narrow band to waist, the underside with brass level adjustment screw, 94cm (37ins) high. John Bleuler is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as apprenticed to Henry Shuttleworth in 1771, he took on the business of the late Thomas Whitford at 27 Ludgate Hill, London in 1791 and worked from that address until 1822. He died in 1829.

A fine George III mahogany bayonet-tube mercury stick barometer with hygrometer and Fahrenheit scale thermometer, Samuel Toulmin, London, circa 1775, The caddy moulded case with open triangular pediment above hygrometer with independent adjustment for the hygrometer 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 brass break-arch 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. Samuel Toulmin is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from Strand, London 1757-83.

A fine George III slender mahogany mercury stick barometer with ivory cistern float, Alexander Adie, Edinburgh, early 19th century, The slender figured mahogany case with brass vernier adjustment screw to top above inset rectangular silvered vernier scale with canted upper angles and calibrated in barometric inches to right hand margin beneath engraved signature A. Adie, Edinburgh to upper edge, the trunk with visible tube above moulded reeded square section cistern cover with ivory mercury float to right hand side and brass level adjustment screw beneath, 94.5cm (37.25ins) high. Alexander Adie 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. In 1804 his uncle took him into partnership under the name of Miller and Adie which continued until after Miller’s death in 1815. Adie was particularly interested in 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; Robert in Liverpool and Patrick in London. 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. The current lot appears to be a well made but functional model from Adie’s range that has practical refinements such as screw vernier adjustment to the top of the case and ivory cistern float. These details, along with the reeded decoration to the cistern cover, demonstrates a commonality between the current lot and the more exotic slender bowfronted model produced by Adie; an example of which was sold in these rooms on Tuesday 4th September 2012 (lot 112) for £7,500 hammer.

A mahogany mercury stick barometer with hygrometer and mercury Fahrenheit scale thermometer, The register bearing signature for James Gatty, London, late 18th century and later, The boxwood edged case with open triangular pediment above hygrometer set behind convex glazed cast brass bezel over rectangular glazed door with curved lower angles enclosing conforming silvered vernier scale calibrated in barometric inches to the right hand margin opposing weather observations to the left, the upper margin bearing engraved signature James, Gatty, London, the trunk with further long rectangular glazed door enclosing mercury tube Fahrenheit scale thermometer with brass cage protection to the bulb and wheatear engraved arched border enclosing delicate leafy scrolls to upper margin, the rounded base with ring-turned domed cistern cover and level adjustment screw to underside, 109cm (43ins) high

A rosewood and mahogany mercury tube stick barometer, C.A. Canti, London, circa 1840, The arched case with canted surround to the applied engraved ivory vernier scale calibrated in barometric inches and with the usual weather observations opposing mercury Fahrenheit and Reaumur scale thermometer, the upper left margin inscribed C.A. CANTI, 30 HIGH HOLBORN, the waisted trunk with visible tube above rounded base applied with a half-ovoid cistern cover with moulded cylindrical upstand and narrow band to waist, the underside with brass level adjustment screw, 91.5cm (36ins) high. C.A. Canti is recorded in Banfield, Edwin BAROMETER MAKERS AND RETAILERS 1660-1900 as working from 30 High Holborn, London, circa 1830-60.

A rare Victorian cast iron mounted oak outdoor mercury stick barometer, Chadburn Brothers, Sheffield for E.H. Straw, London, mid 19th century, The arch-glazed canted silvered brass double vernier scale calibrated in barometric inches and with the usual weather observations labelled YESTER’Y 9. A.M. and TODAY 9. A.M. to lower margin, the arch engraved with retailer’s signature E.H. STRAW, OPTICIAN, 69 LEMAN ST., WHITECHAPEL set within moulded surround to the heavy cast iron arched fascia incorporating relief trade label CHADBURN BRO’S, OPTICIANS & C., SHEFFIELD to lower rail over vernier adjustment screws, conforming arch-glazed mercury tube Fahrenheit and Reaumur scale thermometer with spiral bulb (damaged) and moulded circular cistern panel decorated with armorial device, the plate fitted via brass capped studs onto a moulded oak back panel, 100cm (39.5ins) high. Chadburn Brothers are recorded in Banfield, Edwin, BAROMETER MAKERS AND RETAILERS 1660-1900 as ‘notable makers’ working from Albion Works, 26 Nursery Road, Sheffield and 71 Lord Street, Liverpool circa 1837-75. E.H. Straw do not appear to be recorded in the usual sources.

A very rare Victorian rosewood mercury ‘Patent Compensating Portable Barometer’ or mercury sympiesometer, William Harris and Son, London, mid 19th century, The rectangular silvered scale applied with short U-shaped mercury tube terminating with open bulb to left hand column opposing sealed bulb to the right, the centre with mercury tube Fahrenheit and Reaumer scale thermometer and with engraved inscription Harris’s Patent Compensating Portable Barometer, the upper margin signed WILL.’M HARRIS & SON, 50 High Holborn, London, above right hand side with engraved vertical scale for degrees Fahrenheit ranging between 20 and 120 set behind slide with compressed vernier scale annotated for barometric inches and with the usual weather observations, the upper edge of the slide fitted with angled steel pointer for calibration against the temperature scale behind and with adjustment by rack and pinion to a knurled brass knob fitted to the right hand side of the case, the vernier with independent adjustment via friction slide to a smaller secondary brass knob to the exterior, the lower edge with engraved serial number 284 over recessed circular level recording disc engraved with barometric scale visible through a semi-circular aperture in the plate and manually adjusted via projecting rim to the base, the case with shaped upstand to the cavetto moulded cornice above moulded surround to the glazed front aperture, 33cm (13ins) high. Many makers with the surname Harris have worked in the London instrument trade since the middle of the 17th century, however this branch of the family can be traced back to Richard Harris who is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as working from several addresses in London circa 1710-1810. His son, William, was apprenticed to the clockmaker Joseph Robinson and gained his freedom of the Clockmakers’ Company in 1796. William set up business first at 47 High Holborn, London in 1805 before moving to a couple of doors down to number 50 in 1815. The business became ‘William Harris & Company’ in around 1813 before being renamed ‘William Harris & Son’ in 1841 when William Harris is believed to have taken in his son, Richard Joshua, into partnership. The business is recorded working from 50 High Holborn until around 1855. The design of current lot was described in the 1851 publication by Adolphus Oliver Harris A Treatise on the Patent Compensation Portable Barometer and was developed by William Harris and Son as an improvement on the sympiesometer invented by Alexander Adie of Edinburgh in 1818 (which in turn was essentially an improved version of Robert Hooke’s thermobarometer which was subject of a paper presented to the Royal Society in 1668). Both instruments essentially work in the same way with a syphon tube filled with liquid open to the air at one end and with trapped gas at the other (sulphuric acid and hydrogen were used in the sympiesometer). As barometric pressure increases the liquid will be forced down the tube causing the gas to be compressed, resulting in a change in level in the tube. Unfortunately the volume of the gas changes with temperature so before a reliable reading can be taken the instrument would first need to be calibrated by adjusting the position of the movable barometer scale in relation to the temperature scale behind to reflect the reading provided by the thermometer. The sympiesometer was conceived as an alternative to the mercury marine barometer as it was smaller and less susceptible to the motion of a vessel at sea.

A mid 19c rosewood cistern barometer by G F Eve, 18A Featherstone Street, City Road, London having two verniers and duplicate weather indications for 10am yesterday and 10am today. The register plates and vernier scales are ivory as is the mercury thermometer scale which is graduated with both Fahrenheit and Reaumer scales. The top of the barometer has a double scroll carving surmounted by a shell and the cistern cover is flat. The barometer is 41"" tall overall.

A mid-20th Century George III style mahogany stick barometer, the silvered dial with vernier scale and alcohol thermometer, the case with broken arch pediment above a glazed door, visible mercury tube to trunk, and turned cistern cover, height approx 95cm.

A late Victorian oak cased Admiral Fitzroy `Royal Polytechnic` barometer, the silvered circular dial with vernier scale and inscribed `Joseph Davis & Co, Sole Manufacturers Fitzroy Works, Kennington Park Rd, London`, above special remarks panel and two mercury thermometers, the case with carved arch surmount above a glazed rectangular panel, height approx 104cm.

A George III Mahogany Stick Barometer, c. 1790, Dolland, London, broken pediment, over a feather-banded trunk, hemispherical cistern, signed brass scale with manual vernier, height 39 1/2 in., width 5 1/4 in., depth 3 1/4 in.

An early Victorian mahogany stick barometer by Abraham Optician Liverpool, silvered calibrated Vernier scale and thermometer, manual adjustment bar alongside barometric scale, plain trunk with quarter column moulding over domed cistern cover, 96cm high

20th CENTURY MERCURY STICK BAROMETER, the silvered scale with movable vernier, flanked by an alcohol thermometer, housed in an arch top case with plain trunk and turned cistern cover, 36"" (91.5cm) high

A 19th century 14 inch radius vernier octant by Troughton, London, ebony `T` frame inset ivory scale divided to 95 degrees, floral engraved brass index arm, vacant ivory cartouche, pinhole sights, mirrors and shades, in an oak keystone case.

A 19th century 8 inch raduis vernier sextant by ` Joseph Somalvico & Co, London`:, the black lacquered lozenge frame with silvered scale numbered to 150 degrees, signed as per title, vernier with magnifier, sighting tubes, seven shades and two mirrors, in a fitted mahogany case with accessories.

A 19th century 8 1/2 inch radius vernier sextant by Elliot, London, the black lattice frame with silvered scale marked to 150 degrees, signed as per title, sighting scope, mirrors and shades the radius arm with magnifier, in a fitted case with accessories.

A black enamelled and silvered Fortin pattern stick barometer, by Gallenkamp & Co., London, of cylindrical form, the upper section with a silvered vernier scale no. 1080, over a thermometer and mercury cistern, stamped 'Gallenkamp & Co. Ltd., London', 110cm high, mounted in a stained wood case with a glazed and hinged door

J.E. Drew, Penzance. A late 19th century Cornish serpentine marble desk thermometer with ivory vernier scale, H. 18.5 cm.

AN ENGLISH `HUSUN` TRIPLE-RING SEXTANT by Henry Hughes & Son Ltd, sextant number 39338, 6"" radius reading to 10"", crackled black lacquer finish, pivoting arm with vernier scale, sighting tube, mirrors, various adjusters and lamp for use in poor light, housed in a fitted box with test certificate dated 8/2/44. 14.5cm(h) x 26cm(w) x 28cm(d) Condition Report: Scratches to box, some corrosion showing throughout sextant, viewing advised.

A cased vernier scale by Brown & Sharpe CONDITION REPORT: Good for age

A rare semi-circular 8"" brass protractor by STANLEY London with radius arm and vernier scale and dated 1896 G++

A Regency stick barometer by A. Alberti, with pediment above alcohol tube barometer and silvered vernier scale, signed A. Alberti, Sheffield

A George III mahogany stick barometer by Barelli, Reading, with broken pediment above a thermometer and engraved vernier scale, the chevron veneered and boxwood trunk above domed circular base, 97cm high

19th century mahogany Masonic stick barometer by Charles Aiano The case inlaid with a decorative border above a mahogany bulb cistern . With broken pediment above silvered scale with vernier engraved with Masonic emblems. Signed Chas. Aiano. The trunk with exposed tube flanked by parquetry banding, with domed cistern cover to the rounded base, 38" high Charles Aiano is recorded by Banfield as working from 91 Northgate, Canterbury 1828-41, having probably moved from London circa 1825. 37in. (94cm)

Of maritime interest. Arthur Frederick Marsh (fl. 1858-1875), Diss. A Victorian carved oak aneroid barometer, the case fashioned as an anchor and rope, set white enamelled Arabic calibrated dial, mounted thermometer with vernier scale, H. 43 cm, W. 28 cm.

A 20th Century black enamelled, silvered and brass Fortin pattern laboratory stick barometer of cylindrical form, the glazed upper section enclosing a silvered vernier scale, detailed `No. 7106, A Gallenkamp & Co Ltd, London`, above a mercury thermometer to trunk and cistern, length approx 105cm, within an oval and glazed case with hinged door (lacking mercury).

AN ENGLISH `HUSUN` TRIPLE-RING MICROMETER SEXTANT by Henry Hughes & Son Ltd, with black crackle finish lacquer, pierced frame and pivoted arm mounted with mirrors, filters and brass sighting tube, the vernier scale with fine adjustment, in mahogany box with test certificate dated 13/10/49. 15cm(h) x 26xm(w) x 28cm(d) Condition Reports: Scratches to case, mould or oxidation throughout sextant.

A mahogany stick barometer early 19th century, with broken architectural pediment centered with turned brass finial, the rectangular glass door with chequered boxwood and ebony inlay enclosing an engraved silvered plate with the name F.Jarone, mercury Farenheight and Réamur scale thermometer to the left and forecasting scale with sliding vernier to the right, the flamed mahogany trunk with similar boxwood and ebony inlaid decoration to edges and semi inset and exposed glass mercury filled tube, the chamber covered by a turned and domed mahogany cover with central inlaid decoration, 40in (101½cm) high.

A Victorian rosewood stick barometer, the ivory dial with vernier scale, thermometer and inscribed `Bennett.... London`, the arched case with exposed mercury tube and turned cistern cover, height approx 89cm (some faults).

A 19th Century mahogany stick barometer, the silvered dial with vernier scale and inscribed `P. Guisani, 42 Cock StrT, Wolverhampton...`, the case with concealed tube and turned cistern cover, height approx 98cm.

A George III mahogany stick barometer, the silvered rectangular dial with alcohol thermometer, vernier scale and inscribed `P. Poscha, Bedford`, the case with broken arched pediment, glazed door and chequer stringing above a turned circular cistern cover, height approx 99cm.

A Victorian oak cased stick barometer, the ivory dial with mercury thermometer, vernier scale and inscribed `J. Davis & Son, London & Derby`, the arch case with chamfered trunk, concealed tube and cistern, height approx 92cm.