Details
A 19th-Century black-enamelled brass surveying theodolite,
signed on the horizontal plate Troughton & Simms LONDON, the telescope with rack and pinion focusing, adjustable in elevation by rack and pinion gear, with engraved quadrant and silvered scale, the limb with level and cross-bubble, three verniers and magnifier, on three-screw tripod mounting, telescope length -- 14 5/8in. (37.2cm.)
See Illustration
signed on the horizontal plate Troughton & Simms LONDON, the telescope with rack and pinion focusing, adjustable in elevation by rack and pinion gear, with engraved quadrant and silvered scale, the limb with level and cross-bubble, three verniers and magnifier, on three-screw tripod mounting, telescope length -- 14 5/8in. (37.2cm.)
See Illustration