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 illustrating cracks found on a crank mechanism.
| Identifier | ExFiles\Box 119\2\ scan0185 | |
| Date | 13th March 1924 guessed | |
| CRACK 2.5" 2.3" CRACK | ||