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 showing two waisted bolts with nuts.
| Identifier | ExFiles\Box 95\2\ scan0091 | |
| Date | 10th June 1936 guessed | |
| ", | ||