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 showing micrographs of pits and decarburisation on the inner surface of a spring.
| Identifier | ExFiles\Box 119\1\ scan0204 | |
| Date | 11th June 1939 | |
| ROLLS-ROYCE LABORATORY REPORT: H1./EJW. 3/JM.{Mr Morley} 11.6.39. M.1840/3. X 100. Nature of pits and decarburisation on inner surface of 9hrs. Spring. M.1840/4. X 250. Decarburisation on inner surface of 9.hrs. Spring. | ||