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).
Image showing various disassembled mechanical components, including a connecting rod, gears, and clutch plates.
| Identifier | ExFiles\Box 154\1\ scan0215 | |
| Date | 2nd December 1934 guessed | |
| 10, 20, 30, 60 | ||