Dalton navigational computer, bakelite and metal panels. The computer is designed to be strapped on the thigh. The top panel and calibration disc co-ordinates true air speed, true altitude, indicated air speed and indicated height. By flipping open the top panel, there is access to a circular compass and graph. The graph is turned by a black button on the left hand side of the instrument. On the lid of the cover, is a paper pad which is wired to the backing plate. The paper is headed as follows: Wind at Ft. M.P.H. deg: T From to Air/Speed track course ground speed dist time Time observation There is a hand-drawn map on the top page. The back of the instrument has curved brackets to fit the curvature of the thigh. There is a metal leg brace across the base of the instrument to keep it flat on the thigh. There are 2 sets of straps made from black cloth. The straps have hooks for securing the instrument to the knee.
Signature/Marks and Type
Navigational Computer ICAN Calibration WM
Computer - Dalton MK III D, 2004.105. The Museum of Transport and Technology (MOTAT).