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).
Instruction sheet detailing measurements of wear on car parts after running a certain number of miles.
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan53 | |
| Date | 29th June 1920 | |
| ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. PC 22 (2) Customer's No. 19 of little value, as the exact number of miles run in the case of the former is unknown, while the rubbing block of the latter after running is larger than it should have been originally. Car | Assumed Thickness New | Thickness Measured | Max Amount of Wear | Miles Run | Remarks 3 G II | .265" | .264" | .001" | 1,450 | 4 G II | .265" | .250" to .251" | .015" | About 10,000 | No record of date when put on. 6 G II | .260" to .265" | .253" to .260" | .007" | 10,793 | Measurements actually made before and after running. 7 G II | .275" | .270" to .272" | .005" | 5,430 | Signed C A P This Sheet must be filed on completion of the work. RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 | ||