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).
Confirming receipt of a hand drive alternator for testing as a speedometer.
| Identifier | ExFiles\Box 165\4\ img060 | |
| Date | 3rd May 1930 | |
| X 6023. PN.{Mr Northey} from EFC. EFC4/AM.3.5.30. .X6023. X.6025. HAND DRIVE ALTERNATOR. We have now received the hand drive pocket flash lamp alternator which you have sent to us in connection with the idea of the alternator speedometer. We will advise you from time to time of any interesting tests we make with these apparatus. EFC. | ||