Brass gauging is measured in which unit?

• A. Inches per foot
• B. Ounces per square foot
• C. Gauge number
• D. Pounds per square foot

Answer: (B)

Brass gauging describes thickness by weight per area, not a linear dimension. In sheet metal practice, the thickness of brass is commonly specified as ounces per square foot. This means how much brass a one-by-one-foot piece weighs, and a higher value indicates a thicker sheet. It’s the standard way to express brass thickness in many shop and trade settings, which is why this unit is the best fit.

Inches per foot would be a linear measure, which doesn’t describe sheet thickness. Pounds per square foot is a valid weight-per-area measure as well, but the conventional standard for brass gauging uses ounces per square foot, so that’s the unit you’ll see on gauge charts and in practice.