From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint of an oil cooler for test bed units.
| Identifier | ExFiles\Box 131\1\ scan0101 | |
| Date | 23th May 1933 guessed | |
| Hs{Lord Ernest Hives - Chair} 1007, WATER CONNECTIONS TO E50248, E WATER INLET, 24 x 11 TUBES, E 82520, MATRIX TO BE ASSEMBLED, ON THIS FACE, UNION NUT AND NIPPLE TO E50608 AND E50618, E WATER OUTLET, WATER IN, E50248 MODIFIED, OIL IN, OIL OUT, WATER OUT, OIL COOLER FOR TEST BED UNITS | ||