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).
Instruction regarding the calibration of speedometers for India 1V cars.
| Identifier | ExFiles\Box 6\4\ 04-page196 | |
| Date | 25th October 1928 | |
| X5310 To BY/CGH.{W Clough} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG25.10.28. X4304 BY/CGH{W Clough}4/N24.10.28. INDIA 1V - SPEEDOMETERS. We are asking the A.T. to calibrate their speedometers at 776 revs. Will you therefore instruct this speedometer drive ratio in the gearbox on these cars. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||