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 advantages of using lower-priced tungsten points over platinum points, advocating for replacement rather than repair.
| Identifier | WestWitteringFiles\N\2July1925-September1925\ Scan9 | |
| Date | 3rd July 1925 | |
| R.R. 235A (100 T) (S.H. 159, 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO EFC. FROM R.{Sir Henry Royce} Copy to C.J. H.S. " " ORIGINAL R2/M3.7.25. TUNGSTEN POINTS. X2894 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 attempt- ing to supply files to file up the platinums. R.{Sir Henry Royce} [STAMP: RECEIVED 8 JUL 1925] | ||