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 curves of supplied oil versus required oil using a Redwood Viscometer.
| Identifier | ExFiles\Box 32\3\ Scan146 | |
| Date | 23th June 1926 guessed | |
| A.{Mr Adams} VISCOSITY CURVE OF OIL SUPPLIED B. APPROX VISC CURVE OF OIL REQUIRED TEMP °CENTIGRADE TIME OF EFFLUX REDWOOD VISCOMETER | ||