Portable cautery transformer, with bayonet fitting for attaching to light socket, in leather covered case, made by Thackray, Leeds, English, 1920-1930 Portable cautery transformer 1920-1930
Transformer, made by County of London Electrical Supply Co., London, English, 1920-1940 Transformer, made by County of London Electrical Supply Co. 1920-1940
16mm cineradiography set, Dr. R J Reynold's design, comprises grid-enclosed power-supply, tube stand, x-ray tube, rectifier, screening stand, patient stand, camera unit, control unit and accessories by Watson and Sons (Electro-Medical) Ltd, London, 1935 Reynolds' cineradiography apparatus 1935
Transformer, metal, on metal trolley, by Westinghouse of U.S.A., early 20th century Transformer, metal, on metal trolley 1901-1930