The distance between the inner faces of the rails of railway track; standard gage in the United States is 4 feet 8¹/₂ inches (1.44 meters).

1. A device for determining the relative shape or size of an object.

2. The thickness of a metal sheet, a rod, or a wire.

The minimum sieve size through which most (95% or more) of an aggregate will pass.

The interior diameter of the barrel of a shotgun expressed by the number of spherical lead bullets fitting it that are required to make a pound.

A measure of the density of knit cloth, given in the number of stitches in 1.5 inches (3.7 centimeters).