Photograph showing the bottom flange and web of an O.S side member after 32 hours.
| Identifier | ExFiles\Box 99\2\ scan0186 | |
| Date | 30th March 1938 guessed | |
| Bottom flange and web of O.S side member after 32 hrs. | ||
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).