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 wear and condition of a screw point after 10,000 miles, comparing it to standard platinum points.
| Identifier | ExFiles\Box 35\6\ scan 139 | |
| Date | 29th June 1920 | |
| ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS) SH57.29-6-20.) MP 824359 To Order No. 2 Customer's No. Screw point Wear - about 50% Surface fair only, also discoloured the same as the lever point. There have been no reports from the testers, during the time these points have been running, of trouble experienced with these points all round. The condition of these points after 10000 miles is much about the same as the std platinum points. Signed: H.E.W. This Sheet must be filed on completion of the work. | ||