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).
Arguing for the use of tungsten points over platinum points due to their lower price and replaceability.
| Identifier | ExFiles\Box 35\6\ scan 145 | |
| Date | 3rd July 1925 | |
| X2894 To EFC. from R.{Sir Henry Royce} c. CJ. c. EY. c. HS.{Lord Ernest Hives - Chair} R2/M3.7.25. X.2894. TUNGSTEN POINTS. I understand from your latest reports that you consider there is no difference in life in tungsten or platinum points. It would be a great advantage to use the former, however, owing to their being much lower in price, as we could afford to give ample spares, so that they could be changed as soon as slightly defective. It would be much more advantageous than attempting to supply files to file up the platinums. R.{Sir Henry Royce} | ||