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).
Follow-up letter to C.P. Preston Co. Ltd. regarding the time needed to test a filter before providing an opinion on its quality.
| Identifier | ExFiles\Box 44\1\ Scan022 | |
| Date | 15th January 1921 | |
| X3707 Y4037 R F E.{Mr Elliott - Chief Engineer} hg/TMM/LG. 15th. Jan. 1921. The C.P. Preston Co. Ltd., Holborn House, 112 High Holborn, London W.C. Dear Sirs, Your ref:- WRP/vc 14.1.21. We beg to refer you to our letter of 1st. Dec.1920, in which we stated that a considerable time must necessarily elapse before we could give any opinion as to the quality of the Filter in question. You will, I am sure, realise that a Firm of Rolls-Royce reputation, could not recommend the general use of any Filter before long exhaustive tests were passed through, and we beg you will not waste our time by continuous applications as to its behaviour. You will receive our report as soon as possible. Yours faithfully, | ||