An early 19th-Century lacquered brass "Jones'-Most'Improved" compound monocular microscope, signed on the folding tripod base W & S JONES, 135 Holborn, London, the body tube located on an adjustable arm, the stage and mirror adjustable on the square section pillar, with compass joint to the tapering pillar support, with accessories in fitted mahogany case - 14¼in. (36.2cm.) wide.