A late 19th-century part compendium, by W & S JONES comprising a 1 inch three-draw brass telescope with mahogany outer body tube, a Martin-type monocular microscope with two objectives, a Wilson-type screw-barrel microscope with three objectives with extension tube to fit a dcioptic-ball (missing), with makers trade label (damaged) in mahogany case 13½in. (34.3cm.) wide