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 S. Smith & Sons discussing the accuracy of an instrument, comparing an electric design to a stem-wind job.
| Identifier | ExFiles\Box 164\1\ img237 | |
| Date | 24th June 1940 | |
| S. SMITH & SONS (MOTOR ACCESSORIES) LTD. CONTINUATION SHEET. 1. article and that we can give you one which will not have a greater variation than five minutes per week under normal running conditions. If you require greater accuracy it is not possible in any electric design and the alternative is a really high class stem-wind job. Such a move, in my humble opinion, would be a retrograde step. If you would like further samples for test I shall be delighted to take care of them if you will let me know your wishes. Sincerely yours, Charles W. March W.A.Robotham, Esq., 24.6.40 | ||