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).
Issuing detail drawings for revised framed patch instruments and the incompatibility of older sets.
| Identifier | ExFiles\Box 15\7\ Scan112 | |
| Date | 8th May 1929 | |
| X7530 Hs.{Lord Ernest Hives - Chair} BY/Cgh{W Clough}8/N.8.5.29. Re: Framed Patch Instruments. With reference to Hs{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}1/LG7.5.29, we have issued all the detail drawings for the revised patch of instruments to N.sch.2836, and we are assuming that RHC.{R. H. Coverley - Production Engineer} will order the necessary parts including the dials. In regard to the three sets of instruments which you have suitable for the old scheme, these cannot be used in the new one owing to the fact that the lugs which are provided on the instruments for clamping purposes are in entirely different positions. BY/Cgh{W Clough} | ||