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 and test data sheet recording Speed, Amperes, and Volts.
| Identifier | ExFiles\Box 3\5\ 05-page246 | |
| Date | 24th January 1919 | |
| R.R. 308 (120M) (SP{Mr Spinney} 509 24-1-19) MP 269151 90946 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II To _____ Order No. _____ Customer's No. H320. Re _____ Table of test results: Speed | Amperes | Volts 820 | 12.60 | 14.55 920 | 13.20 | 14.70 1060 | 12.55 | 14.85 1190 | 12.20 | 14.90 1325 | 11.65 | 14.80 1475 | 10.90 | 14.75 1625 | 10.35 | 14.70 1690 | 10.0 | 14.65 1725 | 9.80 | 14.60 1920 | 9.15 | 14.50 2075 | 8.70 | 14.50 2440 | 8.15 | 14.30 2785 | 7.70 | 14.20 2960 | 7.40 | 14.20 3220 | 7.15 | 14.20 3810 | 7.10 | 14.20 445 | 0 | 12.6. Signed: PM This Sheet must be returned on completion of the work. | ||