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).
Request to manufacture six rocker cover thumb nuts from a cheaper material for testing and cost-saving purposes.
| Identifier | ExFiles\Box 158\4\ scan0222 | |
| Date | 6th April 1938 | |
| 1360. To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}9/AP.6.4.38 Rocker Cover Thumb Nuts. Will you please make 6 rocker thumb nuts to E.60743, but in S/M which has a material cost of 2d. each against the normal BZ/S. of 10d. each, which therefore represents a saving of 2/- per engine. These S/M nuts to be nickel deposited and then supplied to the testbed where they will be used quite often to see whether plating will stand spannering. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||