Reporting the fourth failure of a PH.III speedometer trip recorder after 450 miles.
| Identifier | ExFiles\Box 165\2\ img011 | |
| Date | 26th January 1937 | |
| WST 6065. from Mx. {John H Maddocks - Chief Proving Officer} Mx {John H Maddocks - Chief Proving Officer} 13/T26.1.37 PH.III Speedometers Further to Mx {John H Maddocks - Chief Proving Officer} 8/T18.1.37 - we have had another failure of a trip recorder making four failures in all, on the chassis we have been running for oil consumption. This particular speedometer failed after about 450 miles running. The number of the speedometer is R682. | ||
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).