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 for photomicrographs of carburettor needles and seats to show the worst condition of finish.
| Identifier | ExFiles\Box 122\2\ scan0339 | |
| Date | 5th April 1938 | |
| 1033 Mr. Whitehead. Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe}16/JH.5.4.38. Will you please supply (3 prints each) Photomicrographs of the carburettor needles and seats the former to show the worst condition of finish. .180 needle and seat. (bad ridge on needle) .140 " " " S.U. " " " Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} | ||