Compound monocular microscope

Andrew Ross (estab. 1830, closed 1859)
Circa 1845
Large, all brass, bar-limb microscope, having a Y-shaped base holding an inclining tube that holds the mirror, stage, rack and pinion system for coarse focusing and the "bar" holding the tube. Signed, "A. ROSS, London, 1889" on its base. The serial number would date it to circa 1850. With rack and pinion and leaver and screw focusing, mechanical stage with plano-concave reflector, stored in mahogany case. The mahogany case has six drawers fitted for accessories, and contains:
Two oculars marked A and B, substage condenser with diaphragm wheel, a substage Nachet's prism for oblique illumination, a darkfield condenser, brass eyepiece with prism (?), a Rousselet's compressorium, and a live box. Brass stage forceps, metal hand forceps, box of No.1 Micro. squares 1/2 oz. inch, box with Micro. squares blue and opaque, box of No.2 Micro. squares 1/2 oz.3/4 inch, round box micro circles, two loose micro squares two loose magnifying micro squares, two large square microscope slides and 5 rectangular glass slides. There are two objectives 3 In. and 1 In., each with a brass canister marked "A. Ross, London". There are two objectives 1/4 In. and 1 1/2 In., each with a brass canister marked "Baker, London". Originally with a draw of botanical specimens.

Used by Dr L J Balfour of Hawthorn.
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Object detail

Other Maker
0 - Whole
brass, glass, paint
49.7 x 19.5 x 17.5 cm (microscope)
28 x 12.7 x 9.7 cm (bull's eye condenser)
Accession Number
Credit line
Gift of Mrs L J Balfour, 1966
maker's mark ▫ on top of foot: 'A. ROSS LONDON 1889' ▫ MHM00033.1 - microscope
Medical History Museum Category


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