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).
Note on the material used for gears in the Watford EW6 magneto.
| Identifier | ExFiles\Box 65\3\ scan0366 | |
| Date | 30th April 1929 | |
| X7791 EFC. 30.4.29. The gears, both pinion and wheel, in the Watford EW6 magneto are made of bakelite. HEW. | ||