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).
Mileage accumulated by various Scintilla magneto units.
| Identifier | ExFiles\Box 48\2\ Scan169 | |
| Date | 28th January 1925 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} X8795 28.1.25. MILEAGE OF SCINTILLA MAGNETOS TO DATE. No. Type. Particulars and miles run. 34937 AM6A Run 9742 miles on 46-PK‡ 28531 AM6A Run 3192 miles on 93-NK and is doing a considerable amount of running on the EAC. test engine. 34903 AG6A Run 5778 miles on 93-NK. HEW. | ||