A 19th-century lacquered-brass drum-sextant, signed Cany, London, with silvered scale, vernier with magnifier, telescope with vaneable eye-piece and draw-tube focusing and two shades, the screw-on cover forming the base engraved J.R. Young 1st Prize for Military Surveying Royal Military College December 1871, 3in. (7.6cm.) diam., in ebony strung fitted mahogany case 4¾in. (12cm.) wide