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. requesting the overhaul and recalibration of a speedometer for a test rig.
| Identifier | ExFiles\Box 165\2\ img291 | |
| Date | 17th November 1940 | |
| Rm{William Robotham - Chief Engineer}/EC.2/ET. 17th November, 1940. A.T. SPEEDOMETER Co. Ltd., Chronos Works, North Circular Road, LONDON N.W. 2. Attention of Mr. Arrowsmith. Dear Sirs, We are sending, under separate cover, an old type A.T. speedometer which we intend using for a test rig. Will you please overhaul and recalibrate this instrument to give 776 revs/mile. We are not interested in the mileage recordings. We also require, for working this instrument, one 15 ft. large type drive with standard R.R. end connections. In use, the instrument will be about 45 degrees from the horizontal. We are anxious to use this rig as soon as possible and would be very grateful if you could arrange for an early return. Yours faithfully, | ||