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Calculated Industries 4080

Calculated Industries

Calculated Industries 4080

Construction Master™ Pro Trig Calculator

2 in stock

Sale Price: $79.95
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Calculated Industries 4080 Construction Master™ Pro Trig Calculator


  • Dimensional Math and Conversions
  • Work in and convert between all building dimensional formats: Yards, Feet-Inch-Fractions, Decimal Feet and Inches and Metric - including Area and Volume
  • D:M:S to Decimal Degree conversions
  • Weight per Volume
  • Full Trigonometric Function: Sine, Cosine, Tangent, Arcsine, Arccosine and Arctangent simplify complex design and construction-math
  • Built-In Time Saving Functions
  • Complete Stair calculations for Risers, Treads, Stringer Length and Incline Angle
  • Set Riser Height and solve for Stairwell Opening
  • Built-in Right-Angle Functions
  • Roof Function finds Area, Bundles, Squares and 4x8 Sheathing for Flat or Pitched Roofs
  • Custom Rafter Function provides Common Rafters, Regular and Irregular Hips, Valleys and Jacks, instant Cutting Angles (Cheek, Level and Plumb)
  • Jack Rafter results for Regular and Irregular Pitch Roof. Find Rake-Wall Studs with On-center spacing
  • Compound Miter - Store Crown Angle and Enter Wall Corner Angle to calculate the Blade Tilt and Angle for Miter cuts
  • Advanced solutions for Circles, Arches, Columns, Cones, Pillars, Windows and Post-holes
  • Arched Rake-Walls with On-center Spacing
  • Studs - Calculate the number of On-center Studs for an entered Length
  • Equal Sided Polygon - Calculate Corner and Bi-sect Angles, Side Length, Perimeter and Area
  • Board Feet Lumber estimating
  • Additional Features
  • User Preferences: Set custom defined options such as Fractional settings for 1/2" to 1/64" and "Stair Headroom Height," Decimal Degrees and more
  • Exponential Notation: Enter and display exponential values
  • Backspace Key: Makes it easy to change just-entered values
  • Constant Operator: Simplifies repetitive calculations
  • Cost per Unit: Easily solve unit costing and pricing
  • Accumulating Memory (M+) plus three additional Memory Storage locations
  • "Paperless" Tape: Allows for review of last 20 entries, double-check totals
  • Standard Calculations: Works as a math calculator with +, -, +/-, x, ÷, %, Π,, 1/x, X2, and √,
  • Automatic Shut-Off saves battery life

In The Box

In The Box

  • Protective Hard Slide Cover
  • Easy-to-follow User's Guide
  • Handy Pocket Reference Guide in English and Spanish
  • Long-Life Batteries
  • Full One-Year Limited Warranty
  • English and Spanish CD-ROM with “How-To” Video and User’s Guide



  • For Contractors, Architects, Engineers, Project Managers, Estimators, drafts persons, Builders, Framers, Carpenters, Tradespersons


Additional Information

Manufacturer's SKU 4080
Brand Calculated Industries
Additional No
Safety Info No
Shipping Weight 0.3500
Condition New
Product Weight (lbs.) No
Manufacturer's Warranty 1 Year
Return Policy Unopened Only, 30 Days
Addl Specs
  • Size: 5.6” x 3.0” x 0.6” (142.8mm x 76.2mm x 15.9mm)
  • Product Weight: 4.5 oz. (127.5 gm) Includes Case and Pocket Reference Guide
  • Power: Two 3-volt (LR-44/A76) Long-life Batteries
  • Display Type: 11 Digits (7 normal, 4 Fractions) with Full Annunciators
  • Display Dimensions: 0.625” x 2.5” (15.88 mm x 63.5 mm)
  • Accuracy: 10 Digit Internal Accuracy
Video No

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