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 A.C. Sphinx Sparking Plug Co. Ltd. regarding the procurement of spark plugs with thermo-couples.
| Identifier | ExFiles\Box 142\3\ scan0290 | |
| Date | 4th August 1937 | |
| 1204 Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}4/AP. August 4th 1937 The A.C.Sphinx Sparking Plug Co.Ltd., Dunstable, BEDS. Your Ref. CNF/AMS. Dear Sirs, Thank you for your letter of 28th July with further reference to spark plugs with fitted thermo-couples, which you say you can obtain for us from America. A suitable plug for running purposes is your A.C. type X.399. The thread is 14 m/m.{Mr Moon / Mr Moore} We would be obliged if you would obtain 2 dozen suitable plugs, and we will forward our Official Order in the course of a day or two. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||