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 of viscosity curves for three different oils, plotting temperature against time of efflux.
| Identifier | ExFiles\Box 145\2\ scan0031 | |
| Date | 11th May 1934 | |
| LABORATORY VISCOSITY CURVES. A - OLD TYPE WAKEFIELD'S "EP{G. Eric Platford - Chief Quality Engineer}" OIL. B - NEW TYPE WAKEFIELD'S "EP{G. Eric Platford - Chief Quality Engineer}" OIL. C - PRICE'S MOTORINE "C". TEMPERATURE IN °C. TIME OF EFFLUX IN SECONDS FROM REDWOOD N°1 VISCOMETER. | ||