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).
Compression of instrument scales for speeds above 40 mph.
| Identifier | ExFiles\Box 59\2\ Scan068 | |
| Date | 1st September 1930 | |
| EFC2/AD4.9.30 contd. -5- above 40 miles per hour be supplied to the makers of the instrument with a request to compress the scales accordingly. It would be probable that one law of compression would apply sufficiently equally well to all instruments. EFC. | ||