The importance of trueness for revolving members and 'Halo' surfaces on 40/50 HP servo gears.
| Identifier | ExFiles\Box 73\1\ scan0211 | |
| Date | 1st October 1924 | |
| To EP. {G. Eric Platford - Chief Quality Engineer} from Hs. {Lord Ernest Hives - Chair} c. to Sft. {Mr Swift} c. to Wor. {Arthur Wormald - General Works Manager} c. to BY. {R.W. Bailey - Chief Engineer} X9910 Hs {Lord Ernest Hives - Chair} 1/LG6.10.24. 40/50 HP. SERVO GEARS. The most important factor in order to get a smooth acting servo, is to have the revolving member true. It is, of course, expected that the 'Halo' surfaces will be true with the shaft. Hs. {Lord Ernest Hives - Chair} | ||
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).