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).
Data table showing calculations for 'Motorine B Ratio'.
| Identifier | ExFiles\Box 144\1\ scan0033 | |
| Date | 20th August 1914 guessed | |
| Motorine B Ratio 4860 100 398 8.19 100 86 1.76 21.60 9 | ||