A theodolite by Troughton & Simms of London, 19th centuryBrass, glass. The telescope with horizontal and vertical swivel function, bubble tube, two finely scaled, vertical circle segments, each with a magnifying glass, a finely scaled, full horizontal circle with a bubble tube, three magnifiers and manufacturer's mark. Traces of use, the eyepiece cloudy. Length of the telescope 24.5 cm. Total height 24 cm. The precision instrument designed to measure vertical and horizontal angles. In good condition with elaborate, precision engineering.Condition: II