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).
The receipt and testing of a new A.T. speedometer for the 40/50 HP chassis.
| Identifier | ExFiles\Box 50\4\ Scan238 | |
| Date | 12th June 1928 | |
| EFC. {E. Fowler Clarke - Electrical Engineer} BY {R.W. Bailey - Chief Engineer} /Mtn7/K. 12. 6. 28. B.563. 40/50 HP CHASSIS A.T. SPEEDOMETER. We have now received an A.T. speedometer fitted with the small type dial and compensating device which according to tests carried out by tne A.T.Co. does not show more than 2.5% error between temperatures of 12° centigrade and 35° centigrade. We also attach copy of the A.T.Co's letter in connection with this speedometer, and we should be pleased if you will have it tested and let us have your report. BY {R.W. Bailey - Chief Engineer} /Mtn. | ||