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).
Continued page on comparative utility tests for battery and magneto ignition systems, and the difficulty of measuring resistance.
| Identifier | ExFiles\Box 37\1\ scan 116 | |
| Date | 1st August 1921 guessed | |
| -2- Contd. be very suitable for comparative utility tests, on hhe battery ignition if used with the screw terminals, and on magneto ignition if used with the mercury contacts. It does not seem possible to measure its resistance when carrying H.T. current. FJA. | ||