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 drawing of a mechanical assembly with dimensions.
| Identifier | ExFiles\Box 170\1\ img004 | |
| Date | 14th January 1938 guessed | |
| L_C.2 23 3/4 | ||