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 section and elevation views of a mechanical component.
| Identifier | ExFiles\Box 65\4\ scan0123 | |
| Date | 15th December 1928 guessed | |
| F78146 B | ||