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).
Providing the arrangement drawing number for a Sequence Starter Push Button Switch.
| Identifier | ExFiles\Box 64\4\ scan0096 | |
| Date | 28th November 1928 guessed | |
| X7655 B SEQUENCE STARTER PUSH BUTTON SWITCH. The Arrgt. Drg. corresponding to LeC.1904 of the Starter Push Button Switch (Single type) is D.70790. EFC. | ||