Details
J. DAVIS, Derby
A lacquered-brass theodolite, the telescope with 1¼-inch lens, cap, rack-and-pinion focusing and bubble-level, located in twin clamps over vertical half-circle with silvered scale and vernier, the opposite side divided with Diff of Hypo & Base, mounted by trunnion on twin A-supports over horizontal plate with compass box with silvered dial, edge-bar needle and clamp, bubble-level, cross-bubble, chamfered, silvered horizontal circle with twin verniers and single magnifier, on four-screw tripod mount -- 10in.(25cm.) high, in fitted mahogany case
A lacquered-brass theodolite, the telescope with 1¼-inch lens, cap, rack-and-pinion focusing and bubble-level, located in twin clamps over vertical half-circle with silvered scale and vernier, the opposite side divided with Diff of Hypo & Base, mounted by trunnion on twin A-supports over horizontal plate with compass box with silvered dial, edge-bar needle and clamp, bubble-level, cross-bubble, chamfered, silvered horizontal circle with twin verniers and single magnifier, on four-screw tripod mount -- 10in.(25cm.) high, in fitted mahogany case
Further details
See illustration