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).
Specifications for the Graham Propellor Shaft, including weight, length, and diameter.
| Identifier | ExFiles\Box 126\1\ scan0195 | |
| Date | 22th January 1935 | |
| x4707 22.1.35. Graham Propellor Shaft. Total weight of Propellor Shaft 15 lbs. 1 oz. Length of shaft from pin centres 47.312" Diam. of tube 2.500" | ||