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 sketch detailing specifications for two types of asbestos washers.
| Identifier | ExFiles\Box 11\4\ 04-page089 | |
| Date | 10th July 1932 guessed | |
| Asbestos Washers 65 - .125" holes 14 grooves either side | ||