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).
Comparison table of magneto tests showing volt-ampere capacity and figure of merit for various manufacturers.
| Identifier | ExFiles\Box 4\5\ 05-page344 | |
| Date | 23th November 1925 guessed | |
| MAGNETO TESTS - VOLT AMPERE CAPACITY AND FIGURE OF MERIT. Magneto. | Type. | No. | Volt-ampere capacity. | Figure of merit. ---------------------------------------------------------------------- American Bosch | B6 | 3002560 | 53.3 | 4.84 American Bosch | ZR6 | 299874 | 37.3 | 2.47 American Bosch | ZR6 | 3385100 | 44.7 | 2.90 Robert Bosch | ZR6 | 2571556 | 37.9 | 2.08 Eisemann | GN6 | 628380 | 55.0 | 3.25 Conner | CM1 | 8263 | 42.25 | 2.62 B.T.H. | FM6 | R311941 | 32.9 | 3.21 Watford | E06 | 46993 | 34.6 | 2.72 21.425. | ||