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    Model Number: 4065
    Discontinued - No Longer Available
    Calculated Industries Construction Master PRO

    Model Number: 4065

    The Construction Master Pro is an award-winning advanced feet-inch-fraction construction-math calculator with powerful built-in solutions perfect for completing layouts, plans, bids and estimates. Calculate circles, roofs stairs, 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, Estimators, Architects, Carpenters, Framers, Draftspersons, Engineers, Builders, Tradespersons

    Dimensional Math and Conversions

    • Work in and convert between building dimensional formats: Yards, Feet-Inch-Fractions, Decimal Feet-Inches and Metric - including Area and Volume
    • D:M:S to Decimal Degree conversions
    • Find Weight per Volume
    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 for Square-ups, Slopes and more
    • Area, Volume and Perimeter solutions with Length, Width and Height Keys
    • Drywall, Siding and Paneling Key calculates 4x8, 4x9 or 4x12 Sheets to cover an Area
    • 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 Miters 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
    • Block and Footing solutions
    • 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: Review of last 20 entries; double-check totals
    • Standard Calculations: works as a regular math calculator with +, -, +/-, x, ÷, %, π, 1/x, X2, and √
    • Automatic Shut-Off saves battery life
    • Rugged shock, dust and moisture-resistant Armadillo Gear Hard Case (Model #5022-4)
    • Pocket Reference Guides in English and Spanish
    • Two LR44 Long-Life Batteries
    • Full One-Year Limited Warranty

    Product Dimensions:
    • Outside Dimensions: 5.7 x 3.0" x 0.65" (145 mm x 76 mm x 17 mm)
    • Product Weight: 2 lbs.
    Calculated Industries Construction Master PRO

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

    Product Weight:
    4.6 oz. (130 gm)
    Includes Case and Pocket Reference Guide

    Two 1.5-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" (16 mm x 63.5 mm)

    12 Digit Internal Accuracy

    Ask a Question. We would love to help!

    Calculated Industries Construction Master PRO