Note comparing Yoke Bearings (Inlox vs. Silentbloc) after 1420 hours of operation.
| Identifier | ExFiles\Box 99\2\ scan0152 | |
| Date | 4th March 1938 guessed | |
| Yoke Bearings after 1420 hrs. Inlox left. Silentbloc right | ||
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).