A 19th-Century oxidised and lacquered brass transit theodolite, signed on the silvered compass dial TROUGHTON & SIMMS LONDON, the telescope with rack and pinion focusing, lens hood with dust slide, cross wire adjustors, the axis with 5 Inch vertical circle silvered scale, twin verniers and magnifiers and lamp, located on twin A-supports with bubble level over the compass box, with cross-bubble, edge-bar needle, agate cap and clamp, the horizontal plate with enclosed silvered chamfered scale with 2 verniers and magnifiers, on 3 screw tripod mounting with accessories, in fitted mahogany case - 14 5/8ins. (37.1cm.) wide.