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).
The examination of Eska tungsten points on models 3GII and 7GII which are burning away.
| Identifier | ExFiles\Box 35\6\ scan 112 | |
| Date | 14th November 1923 | |
| X.2894.g EFC/T14.11.23. X.2894 - ESKA TUNGSTEN POINTS The Eska tungsten points on 3GII and 7GII have been examined and appear to be burning away rather badly, particularly those on 7GII. E.F.C. EFC. | ||