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).
Schematic drawing of a mechanical component, possibly a pump, with internal mechanisms.
| Identifier | ExFiles\Box 182\M19\ img279 | |
| Date | 12th November 1931 guessed | |
| X, Y | ||