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).
Data sheet detailing the amount of petrol remaining in a 28-gallon tank at various gradients and cambers.
| Identifier | ExFiles\Box 95\4\ scan0192 | |
| Date | 20th December 1935 | |
| -3- Hs{Lord Ernest Hives - Chair}/Wym.{G. Harold Whyman - Experimental Manager}17/KW.20.12.35. 28-Gallon Tank. Petrol not drawn from Tank Tank on level 6 pts. 1 in 10 upward gradient 1 gall. 2 pts. 1 " 8 " " 1 gall. 5 pts. 1 " 5 " " 2 galls.4 pts. Tank in position of N/S Camber of 1 in 10. Level 1 gall. 5 pts. 1 in 10 upward gradient 2 galls.3 pts. 1 " 8 " " 2 galls.6 pts. 1 " 5 " " 3 galls.5 pts. Tank in position of O/S Camber of 1 in 10. Level 6 pts. 1 in 10 upward gradient 1 gall. 3 pts. 1 " 8 " " 1 gall. 6 pts. 1 " 5 " " 2 galls.3 pts. | ||