Blueprint diagram illustrating a fracture on a lever for an axle control damper.
| Identifier | WestWitteringFiles\T\November1928\ Scan029 | |
| Date | 19th November 1928 guessed | |
| LEVER BROKEN <--- TO AXLE CONTROL DAMPER ARROW INDICATES POSITION OF FRACTURE STRAIGHT THROUGH AND CLOSE TO WOODRUFF KEY. | ||
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).