A 19th-Century lacquered brass compound monocular microscope, signed on the base AND ROSS LONDON No. 117, the body tube located on an arm, focusing by rack and pinion with screw fine adjustment, mechanical stage, sub-stage condenser with iris, 1½ diaphragm and plano-concave mirror, ¼, ½ and 1½ Inch objectives by ROSS, and other items, in mahogany case - 20¾in. (52.7cm.) high.