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).
Laboratory report cover showing a photomicrograph of decarburisation on a spring.
| Identifier | ExFiles\Box 119\1\ scan0207 | |
| Date | 11th May 1939 | |
| ROLLS-ROYCE LABORATORY REPORT: HL./EJW. 3/JM.{Mr Morley} 11.5.39. M.1840/8. X 250. Decarburisation on inner surface of 13.hr. Spring. | ||