A brass surveyors Theodolite made by the firm of E.R. Watts & Son, circa
Guarantee line A brass surveyors ('dumpy') level (see notes) with accompanying compass and fixed tribrach (three-armed) base made by the firm of E.R. Watts & Son, circa . Description This is a brass surveyors level with compass, i.e. a dumpy level with compass, made to measure in the horizontal plane only and rotating around a fixed vertical axis. The telescope measure 12 " in length while the instrument stands 7.5" high and 5" in width. This type of instrument is often seen place on a tripod but could be used without such a stand. It does employee a compass seen below the telescope. Above it is a brass level and a steel sight. The barrel is engraved with the name 'E R Watts & Son, no 319' and is dated along with the broad arrow, triple armed mark indicating British government property, and often found on all types of measuring devices including watches used during wartime. There are oxidation marks and perhaps mild pitting or specking of the metal surfaces. Date Height 7.5inches Length 12inches Diameter 5inches Extra Notes DEFINITIONS: DUMPY LEVEL - a SURVEYOR'S LEVEL having a short telescope fixed to a horizontally rotating table and a spirit level with or without a compass. A form of Surveyor's level developed in - surveying instrument consisting basically of a small telescope with an attached spirit level rotating around a vertical axis; for measuring relative heights of land. A THEODOLITE or TRANSIT measures angles and degrees in both horizontal and the vertical planes at the same time, something the level or simple compass cannot do. Ad ID: