liquid measure

Liquid measure refers to units used to quantify the capacity of liquids. Historically, early measurement systems, like those of the Babylonians, included units for liquid volume. For instance, the Babylonian qa was a liquid measure equivalent to the volume of a cube with a handbreadth side, and it was further subdivided into other units like the gur, which represented a substantial volume.12

Modern systems, such as the British Imperial and U.S. Customary systems, also define units for liquid volume. A common example is the cup, which has specific cubic inch and cubic centimeter equivalents in both systems. These systems evolved from older traditions, with the U.S. Customary System being derived from the British Imperial System.34