Details
A fine brass surveying theodolite, signed on the silvered dial Troughton & Simms LONDON, the telescope with graduated bubble level, rack-and-pinion focusing, dust cover and detachable eyepiece,
the axis with twin conical supports, on twin A-frames, with 6inch vertical circle, with inset silvered scale, divided in four quadrants, with bubble level, twin verniers and magnifiers, tangent screw and clamp, the compass box with silvered scale, edge bar needle and cap,
bubble and cross bubble levels, with twin verniers and detachable magnifier mounts, the silvered horizontal circle divided 10°-360°, with tangent screw and clamp, the four-screw tripod mount with tangent screw and butterfly nut lock - 13¾in. (35cm.) high, in two fitted mahogany cases with accessories; tripod and levelling staff
the axis with twin conical supports, on twin A-frames, with 6inch vertical circle, with inset silvered scale, divided in four quadrants, with bubble level, twin verniers and magnifiers, tangent screw and clamp, the compass box with silvered scale, edge bar needle and cap,
bubble and cross bubble levels, with twin verniers and detachable magnifier mounts, the silvered horizontal circle divided 10°-360°, with tangent screw and clamp, the four-screw tripod mount with tangent screw and butterfly nut lock - 13¾in. (35cm.) high, in two fitted mahogany cases with accessories; tripod and levelling staff