An early 19th-century brass Jones's Most Improved Compound Monocular microscope, singed on the folding tripod stand W & S JONES, 30 Holborn London, the body-tube located on a limb adjustable by rack gearing, the stage with rack and pinion adjustment, on the square section pillar support, with plano-concave mirror, simple microscope, various objectives an eared stage, lieberkuhn and other items in fitted mahogany case 12¾in. (32.4cm.) wide