Definitions for **"Inches of Water Gauge"**

A unit of measuring pressure or pressure differential (1in.w.g. = 0.036psi).

Inches of water gauge or column (IN WG or IN WC) A unit of air pressure measurement equal to the pressure exerted by a column of water 1 inch high.(0301)

A measurement that indicates the amount of pressure drop in inches. 1 in.W.G. is equivalent to about 250 Pa.