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 with handwritten torque measurement data for different amperages and RPMs.
| Identifier | ExFiles\Box 64\1\ scan0235 | |
| Date | 29th June 1920 | |
| RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. PC.108 (3) Customer's No. Torque Crawling Teazer torque for 20 amperes. 12.5 lb ins Main torque for 100 amperes. 101.5 lb ins Torque at 1500 rpm. Torque for 100 amperes. 94 lb. ins. Signed C.A.P. This Sheet must be filed on completion of the work. | ||