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).
Calculation for the weight per length of a 45 cwt. winch cable.
| Identifier | ExFiles\Box 175\2\ img121 | |
| Date | 30th May 1941 | |
| To: EV{Ivan Evernden - coachwork}/DB.{Donald Bastow - Suspensions} from Rm{William Robotham - Chief Engineer}/GB. J006 Rm{William Robotham - Chief Engineer}/GB.1/RH.{R. Hollingworth}30.5.41 45 cwt. cable for Winch. The length of cable supplied weighs 13.5 oz. and is 12.5' long. 1' therefore weighs .0675 lb. Rm{William Robotham - Chief Engineer}/GB. | ||