Use of ZS-3 restriction plugs for lower yoke bearings on a Wraith.
| Identifier | ExFiles\Box 108\3\ scan0123 | |
| Date | 4th March 1938 | |
| 600a To Rm {William Robotham - Chief Engineer} /IMW. {Ivan M. Waller - Head of Chateauroux} from Rm {William Robotham - Chief Engineer} /Les. Chateauroux(French test region). Rm {William Robotham - Chief Engineer} /Les.8/MH. {M. Huckerby} 4.3.38. 26.G.VI. We are arranging for a ZS-3 restriction plug to be used for lower yoke bearings on Wraith. Will you please use ZS-3 plugs to see if they are adequate. Rm {William Robotham - Chief Engineer} /Les. | ||
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).