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).
Photographic comparison of wear on shock damper connecting tube rubbers after different test durations.
| Identifier | ExFiles\Box 119\1\ scan0008 | |
| Date | 3rd April 1937 guessed | |
| SHOCK DAMPER CONNECTING TUBE RUBBERS. P.W.600. 22 hrs. 35 mins. SHOCK DAMPER CONNECTING TUBE RUBBERS. P.W.600 37 hrs. | ||