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Sextant by Jesse Ramsden with case

1770-1775

Brass framed octant with case.

1794-1801

Brass framed repeating circle with case.

1815-1825

Spectrometer, fitted with replica of Rowlands grating

1905-1907

Box for avoirdupois weights

1588

Case for Micromap viewer, 1995-1998

1995-1998

Instrument case

1880-1920

Red leather case for glass prism

1845-1885

Leather case for cataract knives from opthalmic instrument set

1810-1850

Mahogany case for planimeter patented 1904 by Connolly Brothers

Red leather case, for miniature spyglass

1801-1900

Lid only of pocket surgical instrument case

500 BCE-500 CE

Pocket surgical instrument case

500 BCE-500 CE

Wooden case with moulded bronze covering with five bronze surgical instruments

3000BCE-100CE

Decorated cylindrical instrument case

Medicine scale in fish skin case

1850-1920

Dark grey fishskin case for spyglass telescope

1701-1800

Leather case for glass demonstration prism

1701-1800

Miniature spyglass telescope with boxwood case

1725-1735.

Accessories case for microdensitometer, 1978

1978

Brass framed sextant with case.

1775-1782

Brass quadrant with stand and case.

1771

Diamond-frame pattern sextant with case.

1845-1855

Mahogany box for Differential Screw Micrometer

1801-1811

Leather case for single opera glass

1800-1848

Leather spyglass case with side-opening

1800-1817

Red leather case lined with black velvet for spyglass

1831-1900

Pocket cylindrical surgical instrument case

500 BCE-500 CE

Copy of surgical instrument box

1901-1936

Felt case for the largest of three double volvelles in brass

Surgical instrument case

1890-1910

Case for Bertrand type refractometer

1870-1893

Shagreen case for Volute compass

1760

Case, for four German hexagonal section measuring rods

1870-1880

Wooden thermometer case (thermometer missing)

1850-1924

Twelve inch astronomical quadrant by Bird

1760-1769

Case containing lancets and knife blades

1801-1930

Prospect glass (spyglass)

1725-1735

Elaborately engraved lancet case

Folding opera glasses, French patent, in velvet case

1850-1950

Instrument case, England, 1650-1700

1650-1700
Small reflecting Gregorian telescope, engraved Thomas Ribright, London Fecit, Brass caps both ends. [by J Ribright, in case - see note]

Small reflecting Gregorian telescope

1735-1806
Brass lacquered sextant with straight-bar-pattern, 24 pillar frame, polished brass limb, wooden handle with counterbalanced tripod pillar stand and mercury artificial horizon in wooden box, all by John and Edward Troughton, 136 Fleet Street , London, England, 1790-1800. Consists of brass 127° scale (-5° to 140°) with 20’ divisions and brass vernier (10”), three index-filter shades (red & green), two horizon filters (red & green), scale magnifier on 90mm swivelling arm. Fitted with threaded telescope bracket for sighting telescope (182mm – inverted image) with 2 extra draw tubes, 131mm sighting tube and other accessories. The fitted rectangular case has in the lid the trade card for J. & E. Troughton. The artificial mercurial horizon consisting of a rectangular wooden trough fitted in a tin tray and a brass-framed, roof-shaped cover with glazed side panels, unsigned, made later, 1845-55.

Brass framed sextant with stand, artificial horizon and case.

1790-1800
Pair of pocket field binoculars, 'Trieder Binocle' model, x3 power, in velvet lined leather case, by C. P. Goerz, Berlin, Germany, 1910-1926. Supplied by W. Gregory, 51 The Strand, London. Fitted with dual lens focus and side slide intra-ocular adjustment .

Pair of field binoculars with case

1910-1926
Single Opera Glass by Chevalier, with helical focussing, in leather case, Chevalier family, France, 1800-1848.

Single Opera Glass by Chevalier

1800-1848
Hand-held Asterioscope in brass mount in red leather morocco case, by Murray and Heath, 43 Piccadilly, London, England, 1850-1880. Consists of fine diffraction grating rulings on glass in rotating frame, thought to be an optical toy in the manner of the kaleidoscope.

Asterioscope in leather case

1850-1880
Quintant made by John Dennett Potter, London, about 1885. Anodized brass diamond-pattern frame, wooden handle. Signed on the limb: J.D. Potter; Poultry & Tower Hill London. Marked at the bottom of the index arm: H O [broad arrow] 10. Inlaid silver scale from -5° to 163° every 10', measuring to 138°. Silver vernier to 10". The tangent screw and clamping screw are on the back of the index arm. Four shades (three grey, one green); three horizon shades (two grey, one green). Index-glass adjustment by screw; adjustment of the horizon glass by capstan screws and a square-headed screw and a detached key. Magnifier on a 90 mm swivelling arm, a frosted glass shade. Threaded telescope bracket in two parts, fitted for correcting collimation error; perpendicular adjustment by rising-piece and a milled knob. Telescope (82 mm) erect image; telescope (184 mm) inverted image, two parallel cross-wires; telescope (155 mm) star finder; extra draw tube (80 mm) inverted image, four cross-wires. Sight-tube (80 mm); three shaded eyepieces (all green); detached threaded telescope bracket for the star finder; adjusting key; adjusting pin. Mahogany keystone box, containing in the lid three certificates of examination of the National Physical Laboratory, for 1885, [illegible, stuck over] and for 1910. The lid also contains a trade label for Cary, Porter Ltd, and a Notice by them explaining how the star finder should be attached to the framed; it was an addition, made by Cary in April 1889. Formerly the property of the Hydrographic Office of the British Admiralty.

Diamond- pattern frame quintant with case.

1860-1889
Surveyor's quintant invented by George Beck and made by M. Dawson, Plymouth, about 1780. Polished brass frame, a detached wooden handle. Signed on the index arm: M,, Dawson fecit | Plymo Dock No 6. Marked on the index arm: G. Beck Invt. Polished brass scale from -10° to 205° every 30', measuring to 193°. Brass vernier to 1', zero at the centre. The double-ended tangent screw and the clamping screw are on the back of the index arm. No shades. Two index glasses, adjustment by screws; adjustment of the horizon glass by two levers and a milled clamping screw. A partly silvered sight vane with a peephole is fixed next to the index glass; a second sight vane on a swivelling arm is fitted on the centre strut. In a shaped mahogany box.

Brass framed surveyor's quintant with case.

1775-1785
Mahogany case (lock defective) 14"x5"x8" for petrological microscope by Voigt and Hochgesang, Gottingen.

Mahogany case (lock defective) 14"x5"x8" for petrological microscope by Voigt and Hochgesang

1860-1876
Gyroscopic sextant very probably made by Carl Plath, Hamburg, Germany, about 1943. Marked on the left side of the casing: Seekreiselsextant | Gerat 616-42A | Hersteller gtl. Casing of grey and black-lacquered aluminium and artificial materials, with black plastic fittings, housing optical equipment, a clockwork averaging mechanism, electrical equipment, and a rubber eyecup. Four shades, no. 2 is missing (all grey). Three batteries, of which two are incomplete (one is possibly from another instrument); a battery charger; eight spare light bulbs (2,5 volt); two blue light bulbs (110 volt), one possibly from another instrument. The bayonet handle is stored separately (hazard). In a fitted wooden carrying case containing in the lid printed handling instructions in German by the Deutsche Seewarte. The case is marked on the outside: 6380.

Aircraft gyroscopic sextant with case.

1941-1945