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).
Blueprint showing the wiring layout for a battery and main switch.
| Identifier | ExFiles\Box 164\1\ img269 | |
| Date | 18th May 1940 | |
| MAIN SWITCH BATTERY ROLLS-ROYCE LTD. PRINT ROOM 18 MAY 1940 DERBY. 30 GVI - 6 Scale TR{Capt. F. W. Turner - Finance}-I Blue - 9B-V Black - 33-GVI-5 6'-6 6'-5 | ||