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 Messrs. Bosch Ltd. clarifying sparking plug thread and reach specifications.
| Identifier | ExFiles\Box 58\2\ Scan092 | |
| Date | 2nd May 1934 | |
| X1812a Hs{Lord Ernest Hives - Chair}/Wst.1/MA. May 2nd, 1934. Messrs.Bosch Ltd., Larden Road, Acton, London, W.3. Dear Sirs, Replying to your letter of the 1st instant reference BEC/DO. The sparking plugs we require are those with 18 & 14 mm. threads, we do not use 12 mm. plugs at all. The reach of the plugs should be in the case of the 18 mm. plug 17 mm. and in the case of the 14mm. plug 14 mm. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||