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).
Sketches showing the design evolution of a spanner for a tappet, including suggestions and Mr. Royce's final design.
| Identifier | ExFiles\Box 79\2\ scan0135 | |
| Date | 2nd July 1914 guessed | |
| Suggested by Entwistle. E3941. E4281. Suggested by Hopkins E4272 To fit round part of Tappet Mr Royce's design. x 1119 Watermark: CROXLEY BOND 1804 Top Right (faint): JSSB.D.11-4-15.419. V.V. (H) 1000/ADC.3.B | ||