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. Cammell Laird & Co., Ltd. inquiring about the supply of Invar Steel.
| Identifier | ExFiles\Box 154a\1\ scan0020 | |
| Date | 15th November 1918 | |
| X. 3407, EFC3/AT151118. 15.11.18 Messrs. Cammell Laird & Co., Ltd., Cyclops Works, Sheffield. Dear Sirs, RE INVAR STEEL. " We should be glad to know if you are able to " supply Invar Steel with a very low coefficient of expansion, and if so, in what forms. One form we would like it in particularly is ¼" diameter rod 40" long. Yours faithfully, R.R. 235a (500) (S.D. 408. 26-4-17.) Hm.{Capt. W. Hallam - Head Repairs} 2/156/13. | ||