The Construction Master Pro Trig Feet-Inch-Fraction calculator provides the building professional complete trigonometric function. This powerful and advanced construction-math calculator features new built-in solutions and expanded preference selection. It allows you to easily determine precise angle measurements and solve the most complex design and construction-math problems. Perfect for estimating materials and costs. In the field or office it helps assure accuracy save time and money.Features Work in and convert between any building dimension including Metric Trigonometric Function Find Weight per Volume Built-in Right-Angle solutions Complete Stair Layouts Roof Rafter and Framing solutions Circular: Arcs Circumference Segments and More - SKU: WYN11068