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Brass framed repeating circle with case.

1815-1825

Red leather case for glass prism

1845-1885

Red leather case, for miniature spyglass

1801-1900

Case for Micromap viewer, 1995-1998

1995-1998

Mahogany case for planimeter patented 1904 by Connolly Brothers

Pocket surgical instrument case

500 BCE-500 CE

Instrument case

1880-1920

Decorated cylindrical instrument case

Medicine scale in fish skin case

1850-1920

Accessories case for microdensitometer, 1978

1978

Box for avoirdupois weights

1588

Dark grey fishskin case for spyglass telescope

1701-1800

Lid only of pocket surgical instrument case

500 BCE-500 CE

Leather case for glass demonstration prism

1701-1800

Sextant by Jesse Ramsden with case

1770-1775

Brass framed octant with case.

1794-1801

Miniature spyglass telescope with boxwood case

1725-1735.

Wooden case with moulded bronze covering with five bronze surgical instruments

3000BCE-100CE

Spectrometer, fitted with replica of Rowlands grating

1905-1907

Leather case for cataract knives from opthalmic instrument set

1810-1850

Brass quadrant with stand and case.

1771

Leather case for single opera glass

1800-1848

Felt case for the largest of three double volvelles in brass

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

Case for Bertrand type refractometer

1870-1893

Shagreen case for Volute compass

1760

Case, for four German hexagonal section measuring rods

1870-1880

Case containing lancets and knife blades

1801-1930

Twelve inch astronomical quadrant by Bird

1760-1769

Brass framed sextant with case.

1775-1782

Prospect glass (spyglass)

1725-1735

Surgical instrument case

1890-1910

Diamond-frame pattern sextant with case.

1845-1855

Elaborately engraved lancet case

Mahogany box for Differential Screw Micrometer

1801-1811

Folding opera glasses, French patent, in velvet case

1850-1950

Leather spyglass case with side-opening

1800-1817

Instrument case, England, 1650-1700

1650-1700

Wooden thermometer case (thermometer missing)

1850-1924
Clock, recording, box, instr. case

Recording clock

1901-2000
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
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
Hassler's reflecting circle, 11-inch diameter with counterpoise stand, by Troughton, London in case, no key [RAS No.43, Sheepshanks No.17]. Presented to the Royal Astronomical Society in 1857 by Miss Anne Sheepshanks sister of Rev. Richard Sheepshanks.

Hassler type reflecting circle with case.

1790-1826
Single Opera Glass by Chevalier, with helical focussing, in leather case, Chevalier family, France, 1800-1848.

Single Opera Glass by Chevalier

1800-1848
Repeating circle (Borda circle) made by Etienne Lenoir, Paris, France, about 1780. Circular polished brass frame, limb and fittings, a wooden handle. Signed on one of the struts: Lenoir AParis no. 53. Brass scale from 0° to 720° every 20'. Two brass verniers to 1', zeros at the right. The index arm carries the index glass; the telescope arm carries the horizon glass. The tangent screw is on the front of the index arm; the clamping screw is on the back. A second tangent screw and clamping screw are on the back of the telescope arm, at the objective end. Three detached index shades (all red); two detached horizon shades (red and green), all the shades are secured by thumb screws. Magnifier on a 60 mm swivelling arm. Index- and horizon-glass adjustment by square-headed screws and a detached key. Two bubble levels are fixed at a right angle on the front of the telescope arm. Telescope (170 mm), inverted image, two parallel cross-wires, is fixed on two telescope brackets, with perpendicular adjustment on both by rising-pieces and milled knobs. A round plane mirror (probably not original to this instrument), a diaphragm, an adjusting key, and a screwdriver. A square, fitted oak box with the remains of a leather carrying handle.

Borda type repeating circle with case.

1775-1785
Reflecting circle made by F.W. Breithaupt and Sohn, Kassel, Hessen, Germany, about 1870. Circular anodized brass frame, polished limb, a wooden handle. Signed on the index glass mount: F.W. Breithaupt & Sohn | Hessen Kassel. Inlaid silver scale from 0° to 140°, and twice from 180° to 80° every 20'. One index arm with a silver vernier at both ends, to 20", zeros at the right. The tangent screw, working against a spring-loaded stop, and the clamping screw are at the bottom of the index arm. Four half-coloured shades (two red, one green (broken), one missing); no horizon shades. Index-glass adjustment by screw; horizon prism without adjustment. Magnifier on a 120 mm swivelling arm serving both verniers, a frosted glass shade (missing). Threaded telescope bracket in two parts, fitted for correcting collimation error; perpendicular adjustment by rising-piece and a milled knob. Telescope (158 mm) inverted image, six parallel cross-wires and one at a right angle to them are engraved on a lens within the telescope; a rotating shaded eyepiece with choice of clear, green, red and blue. A prismatic eyepiece; some unidentified parts are missing. In a square fitted mahogany box containing a trade label for Breithaupt in Cassel and a MS list of contents.

Prismatic reflecting circle with case.

1865-1875
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
Double reflecting circle made by A. Hurlimann, successor to Lorieux, Paris, France, about 1900. Circular anodized brass frame and index arm, a hinged wooden handle. Signed on the brass limb: Lorieux, A. Hurlimann, succ.r a Paris (172). Inlaid silver scale from -5° to 195° every 30'. Silver vernier to 1', zero at the right. The index arm carries the index glass, the horizon glass is fixed on the frame. The tangent screw is on the front of the index arm; the clamping screw is on the back. Seven detached index and horizon shades (six green, one orange). Two index glasses, adjustment on both and on the two horizon glasses by square-headed screws and a detached key (missing) and by capstan screws. Magnifier (single lens) on a 65 mm swivelling arm. Telescope (100 mm), erect image, fixed in its bracket; perpendicular adjustment by rising-piece and a milled knob. Two shaded eyepieces (both green). A screwdriver; a magnifying glass; an adjusting key; an adjusting pin. A square fitted mahogany box (lid cracked) containing in the lid a trade label for A. Hurlimann, Ponthus and Therode, 6, rue Victor Considerant, Paris, and printed instructions in French for cleaning the scale. Painted on the front of the box: H.O [broad anchor] 202.

Brass framed double reflecting circle with case.

1895-1900