• Complete stair calculations for risers, treads, stringer length, stairwell opening and incline angle
• Built-in right-angle functions for square-ups, slopes and more
• Area, volume and perimeter solutions
• Rafter function solves for common rafters, regular and irregular hips, valleys and jacks
• Circular and arc: areas, diameters, circumference
• Advanced solutions for circles, arches, columns, cones, pillars, windows and post-holes
• Find volumes for concrete driveways, columns and more
• Arched rake-walls with on-center spacing in ascending or descending order
• Quickly calculate the number of on-center studs for an entered length
• Solve equal sided polygons, corner and bi-sect angles, side length, perimeter and area

With the Construction Master 5, you'll get easy-to-use fast, accurate construction-math solutions for plans, layouts and on-site construction. Enter the numbers, just as you would say them, and the answers appear in an instant. Calculate roofs, stairs, circles, and more. Works in and converts between feet-inches-fractions and decimals, including metric. Use it in the field or office to save time, reduce costs, prevent re-work and maximize profits.

For Contractors, Framers, Builders, Architects, Engineers and Tradespersons

Key Specifications

Board feet lumber estimating

Easily solve unit costing and pricing

Size: 5.7" x 3.0" x 0.65" (145mm x 76mm x 17mm)

Product Weight: 7 oz. (200 grams), includes case and Pocket Reference Guide

Power: One 3-volt CR2016 long-life battery

Display Type: LCD: 11 digits, 7 normal, 4 fractions

Display Dimensions: 0.73" x 2.56" (19 mm x 65 mm)

Accuracy: 10 digit internal accuracy

Product Contains

Includes: Protective slide-on hard case, pocket reference guides in English and Spanish, one CR2016 long-life battery, one-year warranty