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).
Noting that brushes in a specific material are now standardised for second string purposes.
| Identifier | ExFiles\Box 172\2\ img025 | |
| Date | 29th October 1925 | |
| Contd. -2- EFC2/T29.10.25. S.B. Will you, therefore, kindly note that brushes in this material may now be considered as standardised for second string purposes. EFC. | ||