Imperial Measure was a former system of measurement used in some Commonwealth nations, most notably the United Kingdom and Canada. The Imperial system of measurement was formalised in England January 1, 1826, but has now been supplanted by the introduction of the Metric (SI) system. Canadian railways continue to use Imperial.

One Imperial gallon equals 1.20094 US gallons

One US gallon equals .833 Imperial gallons

One Imperial gallon of water weighs 10 pounds

One Imperial gallon equals 4.5 litres

One ton is 2000 pounds

One long ton is 2240 pounds Rail and coal was measured by the long ton. Even retail sales of coal to households in the 1950's was by the long ton.

Reference

6 George IV chap.12 1825 (statute)

See also

• Imperial unit