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).
Outline drawings of three different spanners.
| Identifier | ExFiles\Box 79\2\ scan0136 | |
| Date | 24th June 1914 guessed | |
| x1119 WEDEVACHOXITEJ 1804 DICKINSON BOND E4272 | ||