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).
List of various magnetos from different manufacturers awaiting testing.
| Identifier | ExFiles\Box 4\5\ 05-page059 | |
| Date | 27th April 1920 | |
| X.430. 27.4.20. X.430. MAGNETOS AWAITING TEST. -------------------------------- 1. Eisemann. G.N.6. X.179. 1. Watford. B.6. fitted with X.2375.) tungsten points. X.2894.) 2. Bosch. Z.R.6. X.3916. 2. " B.6. X.3917. 2. Dixie. Aero. 648. X.3724. 2. Berling. E.61 1. DS 3 XZ X.3723. | ||