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).
Test pieces with a black finish, requesting comments and a comparison with a finish from Messrs. Lucas.
| Identifier | ExFiles\Box 38\6\ Scan173 | |
| Date | 31th March 1919 | |
| To R.{Sir Henry Royce} from EFC. c. to CJ. c. to By.{R.W. Bailey - Chief Engineer} EFC1/AT31.3.19. X.3424.-BLACK FINISH. Further to our EFC2/T2/319, we are sending under separate cover two portions of test pieces which have been black finished by Mr. Hall. We shall be glad to have your comments on this finish in comparison with that of Messrs. Lucas. EFC. | ||