Blueprint detailing dimensions and the nearest hook approach for a gantry or crane.
| Identifier | ExFiles\Box 181\M7\ img052 | |
| Date | 21th December 1923 guessed | |
| 9", Nearest Hook Approach, 2'-3", 21'-0" | ||
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).