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 North & Sons Ltd. requesting the number of revolutions per mile for a sample Watford Magnetic type Speedometer fitted to a 20/25 test car.
| Identifier | ExFiles\Box 165\4\ img111 | |
| Date | 23th October 1931 | |
| X 6129 Hs{Lord Ernest Hives - Chair}/Wst.2/AD. October 23rd, 1931. Messrs. North & Sons, Ltd. Whippendell Rd. Watford. Dear Sirs, Watford Magnetic type Speedometer. We have received the sample speedometer made up to suit our instrument patch and same has been fitted to our 20/25 test car. We would like information as to the number of revs. per mile which it is intended for the drive in order to obtain the correct trip mileage reading. We should be glad if you will let us have this information as soon as possible. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||