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. regarding potential inaccuracies in their instruments.
Identifier | ExFiles\Box 59\2\ Scan061 | |
Date | 27th August 1930 | |
XZ4308 EFCL/AD. 27th August, 1930. The A.T. Speedometer. Co. 183, The Vale, Acton, W.3. Dear Sirs, A.T. Speedometers. We should be interested to know if you consider there is any possibility of increase of reading of these instruments due to a decrease in the control rate of the main spring. During certain tests we have made we have sometimes observed increases of readings which do not appear to be explainable on any other ground than the possibility of the control torque of the main spring having suffered an increase. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||