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).
Extract concerning a 10,000-mile bench test for piston rings.
| Identifier | ExFiles\Box 16\1\ Scan131 | |
| Date | 21th July 1914 guessed | |
| X. 741 Extract from Arm. 19718/185.14 in X.824. Piston Rings E 1436. 10000 mile bench test | ||