Photograph of a gearbox cover plate showing external linkages and controls.
| Identifier | ExFiles\Box 114\4\ scan0113 | |
| Date | 11th December 1935 | |
| A34/11.12.35 PASS 4 | ||
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).