1982.0033
Box H. 98.4 W. and depth 42.4 D. wheels 79.0 C
Air pump for diving suit. Patented by Siebe Gorman & Co. Ltd. London, submarine engineers. Consists of a wooden box containing valves, driven by hand by two external spoked iron wheels. Gauge at front for air pressure and depth of water. Vents at rear for water supply, water overflow and water draw off. Hinged lid. Two carrying hoops and front and rear.