Details
A brass transit theodolite,
by Cooke Troughton & Simms, No. 39438, with silvered vertical circle, two verniers and magnifiers, bubble-level, raised on twin supports from the base plate, with additional bubble-level, chamfered silvered scale with two verniers and magnifiers (one detached), on three-screw tripod attachment -- 12¾in. (32.4cm.) high
by Cooke Troughton & Simms, No. 39438, with silvered vertical circle, two verniers and magnifiers, bubble-level, raised on twin supports from the base plate, with additional bubble-level, chamfered silvered scale with two verniers and magnifiers (one detached), on three-screw tripod attachment -- 12¾in. (32.4cm.) high