2012-02-072012-02-07About 18352012-02-07http://hdl.handle.net/2152.3/394This compound monocular microscope is the earliest Ross instrument in the collection, and may be one of the four known to have survived. The limb, which supports the body-tube and stage, is attached to the pillar by a ball-and-socket joint. The stage carries a tubular column on its under surface, and the pillar sits on a flat tripod base. About 1835. Signed: Ross, London.enBiologyBritish FirmsMicroscopyOptics