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).
Partial engineering drawing showing a cross-section of a component with dimensions.
| Identifier | ExFiles\Box 108\3\ scan0081 | |
| Date | 27th February 1939 | |
| RM{William Robotham - Chief Engineer}-584 12.124 DIA. -1 PARALLEL 10.550 DIA. ±50 .080 ±2 FOR ALL OTHER DIMENSIONS SEE GB-4417 .110 ±3 .425 RAD 5.025 DIA. ±10 4.550 DIA. -10 RM{William Robotham - Chief Engineer}-584 27-2-39 wDe | ||