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).
Hand-drawn diagram with dimensions for a tool used to fit valve springs.
| Identifier | ExFiles\Box 131\4\ scan0275 | |
| Date | 9th June 1937 guessed | |
| TOOL FOR FITTING VALVE SPRINGS 1113 6" 3/8 3 1/2 1 5/8" 7/8 dia quick thread approx 4 threads per inch. 2 3/4 1 1/2" 5/8 cylinder head A 3 3/8" 7" 5/8 square Tool for pushing locking ring into position section for locating Valve Spring. 5/8 A | ||