Table of pulley dimensions specifying piece number, correct vee angle, and correct top width.
| Identifier | ExFiles\Box 123\5\ scan0221 | |
| Date | 7th December 1938 | |
| Rm {William Robotham - Chief Engineer} /Std.2/MH. {M. Huckerby} 7.12.38. PULLEY DIMENSION - B.60. PULLEY | PIECE NO. | CORRECT ANGLE OF VEE. | CORRECT TOP WIDTH OF VEE C/Shaft double pulley (both Vees same) | EB.3974 | 31° | .610 Fan pulley | EB.3947 | 32° | .610 Water pump pulley | EB.3925 | 26° | .600 Dynamo pulley | DB. {Donald Bastow - Suspensions} 1846 | 25° | .600 | ||
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).