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).
Confirming a request for a complete chart of brake ratios and lining details for various cars.
| Identifier | ExFiles\Box 121\1\ scan0315 | |
| Date | 24th September 1940 | |
| 1029 Rm{William Robotham - Chief Engineer}/MHR.{M. H. Rigby} from Rm.{William Robotham - Chief Engineer} . Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Brakes General Rm.{William Robotham - Chief Engineer}21/ML.24.9.40. BRAKES. This is to confirm that you will let me have a complete chart of the brake ratios fitted to our various cars and also lining details. Rm.{William Robotham - Chief Engineer} | ||