Photograph showing damaged teeth on a worm wheel (servo).
| Identifier | ExFiles\Box 136\2\ scan0357 | |
| Date | 28th December 1942 guessed | |
| SHOWING DAMAGED TEETH ON WORM WHEEL (SERVO). | ||
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).