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).
Temperature readings from a vehicle test with specific dashboard and window configurations.
| Identifier | ExFiles\Box 75\4\ scan0117 | |
| Date | 1st July 1912 guessed | |
| 13 i 3. Dashboard filled in, louvred side guards, dashboard ventilators closed, front two side windows open only. Temp Floorbrds. Body temp. Water temp. Time under full power. Air temp. 32 22 70 9½ 13 40 34½ Boil mins 13 No smell, no draught. CWS | ||