Blueprint drawing of a mechanical pump or casing assembly.
| Identifier | Morton\M19\ img279 | |
| Date | 12th November 1931 guessed | |
| ", | ||
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).