An oxidised brass theodolite signed on the silvered dial Thomas Jones 62 Charing Cross London, the telescope with rack-and-pinion focusing, dust slide, bubble level, mounted in cradle, over vertical half circle, with silvered scale and vernier, over compass box with edge-bar needle cap and clamp, bubble and cross bubble over horizontal circle with twin verniers and silvered scale divided 10°-360°, with tangent screw and clamp, with four screw tripod mount, in a mahogany case -- 11in. wide