gauge
/ˈgāj/
noun
a measurement (as of linear dimension) according to some standard or system: such as
the distance between the rails of a railroad
the size of a shotgun barrel's inner diameter nominally expressed as the number of lead balls each just fitting that diameter required to make a pound
verb
to measure precisely the size, dimensions, or other measurable quantity of
to determine the capacity or contents of
estimate, judge
noun
a measurement (as of linear dimension) according to some standard or system: such as
the distance between the rails of a railroad
the size of a shotgun barrel's inner diameter nominally expressed as the number of lead balls each just fitting that diameter required to make a pound