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).
Test record sheet showing measurements of Speed, Amperes, and Volts.
| Identifier | ExFiles\Box 36\4\ scan 105 | |
| Date | 24th January 1919 | |
| RR 300 (120B) (SF 349 24-1-19) MP 200552 91084 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II 19 To Order No Customer's No. 7D149 Re Speed | Amperes | Volts 2550 | 11.6 | 14.8 2855 | 11.5 | 14.8 3190 | 11.3 | 14.8, Signed [Signature] This Sheet must be filed on completion of the work. | ||