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).
Calculation for the torque multiplying units for an 'India' servo.
| Identifier | WestWitteringFiles\M\2April1925-June1925\ Scan124 | |
| Date | 11th June 1925 guessed | |
| -2- ∴ one "output"/input unit = 1/.645 = 1.55 "torque multiplying units". For 'India' servo. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||