Blueprint diagram illustrating where a crack occurs in a cylinder head.
| Identifier | ExFiles\Box 13\2\ 02-page001 | |
| Date | 5th March 1927 guessed | |
| CYLINDER HEAD CRACKED HERE | ||
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).