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).
Log sheet detailing the testing of large diameter tungsten points on a 40/50 chassis.
| Identifier | ExFiles\Box 35\6\ scan 204 | |
| Date | 14th September 1926 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Diameter Tungsten points Date on. | Location. | Date off. | REMARKS. | Miles reading START. | Miles reading FINISH. | Miles covered. | Total Miles 22-1-26 | 9PK | | Fitted to 40/50 chassis 9PK | 1719 | | | 3-3-26 | ~ | | condition good. | | 2139 | 420 | 3-6-26 | ~ | 14-9-26 | ~ | | 2381 | 662 | 662 | | | | | | 2808 | 427 | 1089 14-9-26 | lab. | | Removed and replaced by std. platinum points | | | | x2894 | ||