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).
Photograph showing the results of a rig test on an engine cylinder block.
| Identifier | ExFiles\Box 94\3\ scan0283 | |
| Date | 30th March 1922 guessed | |
| RIG TEST 235CC | ||