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).
Drawing of a damping disc for part number Hs. 1172.
| Identifier | ExFiles\Box 151\2\ scan0107 | |
| Date | 17th October 1935 | |
| Hs {Lord Ernest Hives - Chair} 1173 15° .032 .218 DIA .500 DIA 1.302+/-1 DIA .185+/-1/2 DIA 60° CHAMFER .156 .437 M {Mr Moon / Mr Moore} /S DAMPING DISC FOR Hs. {Lord Ernest Hives - Chair} 1172 Kee 17.10.35 | ||