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).
Warning notice regarding the procedure for running the engine with the battery removed.
| Identifier | ExFiles\Box 51\2\ Scan129 | |
| Date | 20th July 1923 guessed | |
| W A R N I N G : IF ENGINE IS TO BE RUN WITH BATTERY REMOVED, BOLT CABLE TERMINALS TOGETHER. AMMETER NEEDLE OSCILLATION THEN INDICATES CHARGING SWITCH LEFT ON IN ERROR. [Faint watermark text] DICKINSON BOND MADE AT CROXLEY | ||