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).
Graph comparing the viscosity curve of supplied oil versus the required oil at different temperatures.
| Identifier | ExFiles\Box 144\1\ scan0157 | |
| Date | 5th July 1926 guessed | |
| A.{Mr Adams} VISCOSITY CURVE OF OIL SUPPLIED B. APPROX VISC CURVE OF OIL REQUIRED TEMP °CENTIGRADE TIME OF EFFLUX REDWOOD VISCOMETER A B 25 20 15 10 5 0 -5 100" 200" 300" 400 500 600 700 800 900 | ||