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).
Standard unit conversions for weight and volume.
| Identifier | ExFiles\Box 3\3\ 03-page017 | |
| Date | 10th March 1911 | |
| S.T.D. 100. 10/3/11 x200 Standard units (use inches. lbs. cube inches) 1 cu. in. = .0324 lbs cylinder oil (.9 density) 1 cu. in. = .0361 " water. 1 cu ft (water) = 62.5 lbs. 1 cu ft = 1726 cu. ins. 1 Gall (water) = 10 lbs. 1 cu. ft = 6.25 gallons 1 Gall = 276.5 cu. ins. N.P. 11/11/11 29/11/11. CHR. | ||