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 from the British Piston Ring Co. Ltd. comparing the finish of Hicrome inserts to those made of Brivadium.
Identifier | ExFiles\Box 132\5\ scan0070 | |
Date | 21th March 1939 | |
FORM 17. Continuation Sheet No. 1. THE BRITISH PISTON RING Co. LTD. COVENTRY. 21st March 1939 Messrs. Rolls-Royce Ltd. -------------------------- you will be able to identify them by the finish. The Hicrome inserts are of a much closer grain and appear to be smoother in the bore than the ones in Brivadium. Yours faithfully, THE BRITISH PISTON RING CO LTD. [Signature] SALES DEPARTMENT. BEC | ||