Blueprint diagram illustrating the failure of a front expansion box.
| Identifier | ExFiles\Box 14\6\ Scan165 | |
| Date | 11th July 1930 | |
| FAILURE OF FRONT EXPANSION BOX. 2A Ex. TEST ROOM 11 JUL 1930 DERBY. | ||
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).