Cover memo for two methods of obtaining a black finish on brass work.
| Identifier | ExFiles\Box 38\6\ Scan160 | |
| Date | 31th January 1919 | |
| R R 235 a (100 T) (S.E. 527. 21-2-18) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 21 D To Mr. Hall from EFC. {E. Fowler Clarke - Electrical Engineer} EFC {E. Fowler Clarke - Electrical Engineer} 1/AT31.1.19. X.3424.-BLACK FINISH ON BRASS WORK. Attached are copies of two methods of obtaining the above effect, which may be of interest to you. EFC. {E. Fowler Clarke - Electrical Engineer} | ||
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).