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).
Hower lever bearings.
| Identifier | ExFiles\Box 99\2\ scan0154 | |
| Date | 4th March 1938 guessed | |
| hower lever bearings after 1420 hrs. Inlox has radiused inner tube | ||