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 showing the time of efflux for various oils and fluids from a Redwood No 1 Viscometer at different temperatures.
| Identifier | ExFiles\Box 179b\2\ img105 | |
| Date | 14th November 1938 guessed | |
| HS{Lord Ernest Hives - Chair} 762 CURVES OF TIME OF EFFLUX FROM REDWOOD No 1 VISCOMETER AT VARIOUS TEMPERATURES DEGREES C SECONDS COMPRESSOR OR STANDARD R.R. SHOCK DAMPER OIL LOVEJOY STANDARD DELCO OIL STANDARD LOCKHEAD FLUID | ||