Photograph of a mechanical assembly, possibly a test rig, with weights on the left and a plunger or pump on the right.
| Identifier | ExFiles\Box 102\6\ scan0176 | |
| Date | 15th November 1937 guessed | |
| ", | ||
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).