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).
Drawing showing a disconnected thermostat mechanism.
| Identifier | ExFiles\Box 82\1\ scan0325 | |
| Date | 11th December 1933 guessed | |
| Thermostat disconnected z | ||