Calculated Industries Scale Master Pro Project Calculator

72 built in scales, 39 imperial (feet and inch), and 33 metric for maximum versatility in architectual, engineering, and civil scaling. 6 custom scales. 2 built in memories solve area and volume. Store and recall length, width, and height values. Accumulate linear, area, and cubic values. Provides most needed dimensional units. Subtract key allows you to subtract rolled distances. Boxed.