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).
Sketch of a mechanical component with a handwritten note indicating an area of significant wear.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page074 | |
| Date | 26th November 1932 guessed | |
| this contact has worn very bad | ||