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).
Viscosity curve graph for Castrol XXL oil, plotting temperature against efflux time from a Redwood No. I viscometer.
| Identifier | ExFiles\Box 145\1\ scan0068 | |
| Date | 1st December 1933 | |
| VISCOSITY CURVE - CASTROL XXL LABORATORY 1. 12. 33. TEMPERATURE IN °C TIME OF EFFLUX IN SECONDS FROM REDWOOD No I VISCOMETER | ||