Pencil drawing of the 40/50 Instrument Board layout.
| Identifier | ExFiles\Box 15\7\ Scan192 | |
| Date | 26th July 1933 guessed | |
| STARTER CLOCK SPEEDO STARTER CARB HS {Lord Ernest Hives - Chair} T OFF M O MSB 40/50 INSTRUMENT BOARD | ||
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).