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).
Drawing detailing the specifications and dimensions of a water pump impellor.
| Identifier | ExFiles\Box 126\1\ scan0079 | |
| Date | 24th January 1938 guessed | |
| Exs. 402 3.875 DIA: IMPELLOR BLADES ON REAR .100 DEEP THESE DEAL WITH BYE-PASS WATER .800 6 HOLES EQUALLY SPACED BETWEEN IMPELLOR BLADES .500 DIA: 1.850 CTS.{C. Trot Salt - Carburation} .750 DEEP 6 IMPELLOR BLADES. MATERIAL I. C. WATER PUMP IMPELLOR. | ||