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 recording chart with a vertical scale from 0 to 300, produced by G. Cussons Ltd.
| Identifier | ExFiles\Box 79\3\ scan0044 | |
| Date | 18th September 1917 guessed | |
| X.3181 300 250 200 150 100 50 0 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} CUSSONS, LTD, | ||