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).
Letter to The British Thermostat Co. Ltd. requesting a rheostat and switch for a sample car heater.
| Identifier | ExFiles\Box 137\2\ scan0024 | |
| Date | 8th February 1938 | |
| 1158 or 1328 Rm{William Robotham - Chief Engineer}/Std.14/MH.{M. Huckerby} 8th. February 1938. Messrs. The British Thermostat Co. Ltd., Teddington Works, Sunbury-on-Thames, Middsx. For the attention of Mr.Martin-Hurst. Dear Sirs, Will you please let us have by return if possible, a controlling rheostat and switch suitable for regulating the speed from maximum to zero r.p.m. of the sample car heater, electric motor supplied by you to Messrs. John Marston Ltd. We are carrying out tests on same, and on receipt of rheostat will forward you an official order for same. Yours faithfully, for ROLLS-ROYCE LTD. | ||