Technical note on the calibration of A.T. Speedometers for Phantom II and 20/25 HP chassis.
| Identifier | ExFiles\Box 59\2\ Scan092 | |
| Date | 4th December 1930 | |
| X. 4308 EFC. {E. Fowler Clarke - Electrical Engineer} BY {R.W. Bailey - Chief Engineer} /Cgh {W Clough} 34/G.4.12.30. X.4308 A.T. SPEEDOMETERS. EFC {E. Fowler Clarke - Electrical Engineer} 2/AD.3.12.30. Instruments for Phantom ll are calibrated for 785 revs. per mile, and for the 20/25 HP. chassis they are calibrated for 730 revs. per mile. We are informed by the A.T. Speedometer Co. that the next highest figure which they can give us for the Phantom ll instruments is 800 revs. per mile. RECEIVED BY {R.W. Bailey - Chief Engineer} /Cgh. {W Clough} | ||
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).