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).
Concluding statement on the reliability and accuracy of comparative data presented.
| Identifier | ExFiles\Box 145\1\ scan0129 | |
| Date | 1st September 1933 | |
| We believe that the figures provide reliable comparative data, that the overall order of accuracy is adequate for the purpose, and that, apart from the use of elaborate and special instruments recording instantaneous values, it could only be enhanced by artificially altering important practical factors which are typical of actual operating conditions. (Signed) William Cramp September 1933. | ||