A late 19th-Century oxidised and lacquered brass Everest-pattern theodolite, signed Troughton & Simms LONDON, the telescope with rack and pinion focusing, lens hood, bubble level and cross wire adjustors, located by twin clamps, the axis with 2 part-circles divided 55°-0-35° (X 2), with 2 verniers, tangent screw fine adjustment and clamp, the horizontal plate with cross-bubble over the silvered chamfered horizontal circle, with 2 magnifiers, on 3 screw tripod mounting, in mahogany case with accessories - 11ins. (28cm.) wide. See Colour Plate