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 cross-section of a mechanical housing or crankcase.
| Identifier | ExFiles\Box 3\3\ 03-page074 | |
| Date | 1st August 1922 guessed | |
| ", | ||