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).
Letter to Messrs. North & Sons, Ltd. regarding the results of EW6A magnetos using contact breakers with tungsten points.
| Identifier | ExFiles\Box 43\4\ Scan200 | |
| Date | 17th December 1929 | |
| Messrs. North & Sons, Ltd. Whippendell Rd., Watford. 17th December, 1929. -2- We think we have already informed you that we are so far, very pleased with the results of EW6A magnetos using contact breakers fitted with tungsten points. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||