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).
Electrical experimental record sheet for testing tungsten points, tracking mileage and maintenance.
| Identifier | ExFiles\Box 35\6\ scan 411 | |
| Date | 19th April 1926 | |
| X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 2894 Tungsten points (ground flat) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. 22-7-27 | 9EX | | Fitted to 9EX. | 5741 | | | 17-8-27 | " | | | | 6977 | 1236 | 1236 15-9-27 | " | | | | 8520 | 1543 | 2779 5-10-27 | " | | | | 9280 | 760 | 3539 4-11-27 | " | | | | 529 | 1249 | 4788 9-12-27 | " | | Trimmed and reset. | | 2142 | 1613 | 6401 9-1-28 | " | | | | 3042 | 900 | 7301 6-2-28 | " | | Condition Good. | | 3660 | 618 | 7919 5-3-28 | " | | | | 4356 | 696 | 8615 12-4-28 | " | | Trimmed and reset. | | 6093 | 1737 | 10352 Now standardized with new distributor 19.4.26. | ||