Imperial units

thumb|John Blenkinsop's pioneering locomotive pulling several chaldrons (1813). thumb|Chaldron waggon at Beamish Museum|Beamish. The long brake lever is for control when running down to the [[staith by gravity. Note that the perspective of this photo makes the chaldron seem much larger than it is.]] A chaldron (also chauldron or chalder) was an English measure of dry volume, mostly used for coal; the word itself is an obsolete spelling of cauldron. It was used from the 13th century onwards, nominally until 1963, when it was abolished by the Weights and Measures Act 1963, but in practice until

amount that can be taken between the thumb and forefinger

distance measuring device used for surveying

unit of torque

120 (as in six score, rather than 100)

thumb|The Mettur Dam has a capacity of 93.4 tmcft The abbreviation tmcft (also written tmc ft, TMC, or tmc), representing a thousand million cubic feet (one billion = 1,000,000,000 = 109 cubic feet) is commonly used in India in reference to volume of water in a reservoir or river flow.