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).
Observations on the insulation resistance of a high tension system on a car.
| Identifier | ExFiles\Box 45\4\ Scan099 | |
| Date | 21th November 1922 | |
| Contd. -3- EFC/T21.11.22. (8) We are at the moment making observations of the insulation resistance of the high tension system on the car both with 200 volts D.C. and 260 volts A.C. and in both cold and hot conditions. EFC. | ||