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Construction Master 5
Feet-Inch-Fraction Construction-Math Calculator
For Contractors, Builders, Architects, Engineers and Tradespersons
  • Linear, Area and Volume solutions: Convert dimensions, including Metric
  • Rafter, Roof and Framing solutions: Hip/Valley, Jacks and Rake-Walls
  • Stair solutions: Risers, Treads, Stringer, Incline
  • Built-in Right-Angle solutions; Automatic Square-ups
  • Circular and Arc Calculations: Areas, Diameters, Circumference
  • Includes CD-ROM with English/Spanish “How-To” Video and User’s Guides

The Construction Master 5 is easy to use. Quickly find solutions to challenging building and dimensional problems; no need to remember complicated formulas. Enter the numbers just as you would say them – the solutions appear in an instant – they’re built-in to your Construction Master 5. Perfect for completing layouts, plans and bids on the job site or in the office. Reduce the risk of expensive errors when estimating costs and materials. Save time, money and frustration!


Dimensional Math and Conversions
  • Works in and converts between building dimensional formats: Yards, Feet-Inch-Fractions, Decimal Feet-Inches and Metric – including Area and Volume
  • Find Weight per Volume

Dedicated Functions
  • Stair calculations for Risers, Treads, Stringer Length and Incline Angle; displays Run and Rise
  • Custom Rafter Function calculates Common Rafter, Regular and Irregular Hips, Valleys and Jacks
  • Jack Rafter feature provides complete solutions for Regular and Irregular Pitch roofs; Displays On-center spacing
  • Solutions for Circles, Arcs, Columns, Pillars, Windows, Post-holes and more
  • Rake-Wall function determines Stud Length for any On-center spacing in ascending or descending order
  • Board Feet Lumber estimating

Added Features
  • User Preferences: Set custom defined options such as Fractional settings for ½, ¼, 1/8, 1/16, 1/32, and 1/64
  • Backspace Key: Makes it easy to change just-entered values
  • Cost per Unit: Easily solve unit costing and pricing
  • “Paperless” Tape: Allows for review of last 20 entries; double-check totals
  • Standard Calculations: Works as a math calculator with +, -, +/-, x, ÷, %, ?, 1/x, X2, and v
  • Automatic Shut-off saves battery life
  • English and Spanish User’s Guides on CD-ROM with “How-To” Video
  • Long-Life Battery
  • 360° protective door with handy User’s Guide compartment
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