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 of a mechanical lifting or balancing rig with a hanging weight.
| Identifier | ExFiles\Box 92\4\ scan0044 | |
| Date | 21th December 1934 guessed | |
| ", | ||