An early 19th-Century lacquered brass miniature theodolite, signed Harris & Co. 50 Holborn LONDON, the telescope with extension piece and bubble level, draw-tube focusing, located in twin clamps over the vertical half-circle with silvered scale and vernier, external rack gear adjustment, the axis on twin Vee-supports over the horizontal plate incorporating the compass box, the silvered dial with edge-bar needle, jewelled cap and clamp, the silvered chamfered horizontal circle with twin verniers and enclosed rack adjustment on staff mounting, with makers trade label, in fitted mahogany case - 8 3/8ins. (21.3cm.) wide.