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 showing a cross-section of a simplified crown wheel mounting.
| Identifier | ExFiles\Box 114\1\ scan0172 | |
| Date | 9th March 1939 guessed | |
| SCALE - NONE SIMPLIFIED CROWN WHEEL MOUNTING | ||