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).
Exploded-view photograph of a gear pump, showing the housing, cover, gasket, and helical gears.
| Identifier | ExFiles\Box 149\2\ scan0212 | |
| Date | 25th April 1941 guessed | |
| Fig VII. | ||