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).
Photograph of a brake drum cast on a steel centre plate.
| Identifier | ExFiles\Box 120\1\ scan0227 | |
| Date | 4th October 1937 | |
| ROLLS-ROYCE LABORATORY REPORT: M 1,426. H1/EJW.5/JN.4.10.37. 3077 C BRAKE DRUM CAST ON STEEL CENTRE PLATE. | ||