B.L. Makepeace Inc.

Advanced feet/inch/fraction construction math calculator sets the industry standard. Work in and convert between building dimensions. Run, rise and pitch keys provide solutions for stairs, roof and rafter layout. Calculate area, volume and perimeter. Complete stair layout and framing solutions. Circular calculations with arc, area and circumference. Perfect for layout, plans and estimates for contractors, engineers, architects and builders.

Feet/Inch/Fraction calculator provides trigonometric functions and solutions. Work in and convert between any building dimension. Calculate area, volumes, framing, stair layouts, right angle solutions, circular arcs, segments, circumference, solve complex design problems. For architects, engineers, project managers and builders.

Professional grade standard to metric conversion calculator with over 400 unit conversion combinations including linear, area, volumetric, weight, weight to volume, linear velocity, flow rate and pressure.

Advanced digital plan measure makes it easy to do linear, area and volume take-offs with speed, accuracy and confidence. The Scale master has 91 built-in scales and 8 custom scales. Lets you roll, store and recall L, W and H values. Operates on (2) 3V lithium batteries.