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).
Requesting the fitting of 12 tungsten rivets to 12 standard contact breaker levers.
| Identifier | ExFiles\Box 35\6\ scan 361 | |
| Date | 14th November 1927 | |
| To RHC.{R. H. Coverley - Production Engineer} from EFC. X2894 EFC1/T14.11.27. Will you please have the 12 tungsten rivets handed to you herewith fitted to 12 standard contact breaker levers complete with rubbing blocks. EFC. | ||