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 A.T. Speedometer Co. Ltd. with retest results for speedometer No. F429.
| Identifier | ExFiles\Box 59\2\ Scan167 | |
| Date | 6th July 1932 | |
| X6051b. HS{Lord Ernest Hives - Chair}/Wst.S/MA. July 6th, 1932. The A.T. Speedometer Co. Ltd., Chronos Works, North Circular Road, London, N.W.2. Dear Sirs, A.T. Speedometer No. F429. With reference to the above instrument which has been returned to us under cover of your letter of the 29th ult ref. A²A/LAH we have now retested this instrument and now find it to be considerably better. Our drive revolution figures taken on our test rig are as follows :- 10 M.P.H. 151 R.P.M. 20 " 290 " 30 " 430 " 40 " 570 " 50 " 711 " 60 " 855 " 70 " 991 " 80 " 1120 " | ||