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).
Partial blueprint showing a mechanical component with annotations.
| Identifier | ExFiles\Box 179b\2\ img252 | |
| Date | 20th December 1932 guessed | |
| SUPPORT CHAN, DRILLED IN, 62 1/2°, 5/8 | ||