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).
Diagram of a governor mechanism with hand and foot controls.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan10 | |
| Date | 1st March 1914 | |
| THIS CAN HAVE ANY SHAPE OR CHARACTERISTIC TENSION GOVERNOR SPRING INCREASE TENSION BY HAND FOR HIGHER SPEED HAND FOOT C.G / 3/14 | ||