An early 19th-century lacquered brass Jones's Most Improved compound monocular microscope, (body tube missing), signed on the folding tripod stand W & S JONES 30 Holborn London, with body-tube limb the stage with rack and pinion adjustment, the square-section pillar with plano-concave mirror, with various accessories including wheel objective mounting, bull's-eye condenser, frog-plate live box sliders and other items, in fitted mahogany case with two carring handles, 12¾in. (32.4cm.) wide