1. 1. H. Ll. D. Pugh and D. A. Gunn , “A strain gauge load cell for use under high hydrostatic pressures.” National Engineering Laboratory Report No. 143.
2. 2. Plexol 201. Manufactured by Rohm and Haas Co. and sold in the U.K. by Lennig Chemicals.
3. 3. Type BP10 manufactured by Control Instru-ments Ltd., Alfreton Road, Derby.