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 displaying various dis-assembled mechanical components, including measurement dials, a curved bar, and fasteners.
| Identifier | ExFiles\Box 155\4\ scan0062 | |
| Date | 1st March 1939 guessed | |
| 216 Schedule XI Sheet 6. | ||