Skip to content
Need a quote? Need to submit a PO? Email us at
Need a quote? Need to submit a PO? Email us at

44080 Construction Master Pro Desktop

SKU Calc_44080
Original price $89.95
Original price $89.95 - Original price $89.95
Original price $89.95
Current price $84.95
$84.95 - $84.95
Current price $84.95

Quantity discounts available! Email

Advanced Desktop Construction-Math Calculator with Full Trig Functions

The Construction Master Pro Trig - Desktop provides construction professionals with complete trig functions to help them quickly and easily solve complex construction-math problems. It saves time, reduces costs and prevents re-work. You can effortlessly work in and convert between feet-inch-fractions and metric units. Instantly calculate complex construction challenges for stair layouts, roofs, framing and much more. Full trig functions with sine, cosine, tangent, arcsine, arccosine and arctangent.

Construction Calculations

  • Work in and convert between any building dimension, including Metric
  • Trig Function
  • Find Weight per Volume
  • Built-in Right-Angle solutions
  • Complete Stair Layouts
  • Roof, Rafter and Framing solutions
  • Circular: Arcs, Circumference, Segments and More
  • Stairs - Set Riser Height and solve for Stairwell Opening
  • Studs - Find number On-center for an entered Length
  • Compound Miter Cuts Arched Rake-Walls
  • Equal sided Polygons

The Construction Master Pro Trig - Desktop is perfect for completing layouts, bid and estimates. No office should be without it. It will save you time and money.

For Contractors, Architects, Builders, Engineers, Project Managers, Estimators, Draftspersons

Dimensional Math and Conversions

  • Work in and convert between all building dimensional formats: Yards, Feet-Inch-Fractions and Metric - including Area and Volume
  • D:M:S to Decimal Degree conversions
  • Find Weight per Volume
  • Full Trig 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
  • Advanced Stairs - set riser height and solve for stairwell opening
  • Built-in right angle functions
  • Easy area, volume and perimeter solutions with Length, Width and Height keys
  • Drywall, siding and paneling function calculates 4x8, 4x9 or 4x12 sheets to cover an area
  • Roof function finds area, bundles, pitch and squares
  • Custom rafter function solves for common rafters, regular and irregular hips, valleys and jacks; instantly find cutting angles for cheek, level and plumb angles
  • Jack rafter solutions for regular and irregular pitch roofs
  • 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
  • Calculate the number of on-center studs for an entered length
  • Equal-sided polygons - calculate corner and bi-sect angles, side length, perimeter and area
  • Block and footing solutions
  • Board feet lumber estimating

Additional Features

  • Large multi-position tilt display LCD
  • User Preferences: Set custom defined options such as fractional settings, 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
  • Cost per Unit: Easily solve unit costing and pricing
  • Accumulating Memory (M+) - Three additional memory storage locations
  • "Paperless" tape allows for review of last 20 entries
  • Works as a standard math calculator with +, -, +/-, ×, ÷, %, π, 1/x, X2, and √
  • Automatic Shut-Off extends battery life


  • Easy-to-follow User's Guide
  • Long-Life Battery
  • Full One-Year Limited Warranty
  • Full Size Keys
  • User's Guide, Spanish Pocket Reference Guide

Tech Specs

  • Size: 6.4" x 9.0" x 1.4" (162mm x 229mm x 35mm)
  • Weight: .68 lb. / 10.8 oz. (308.4 gm.)
  • Power: Single 3-volt (CR-2032) Long-life Battery
  • Display: 11 Digits (7 normal, 4 Fractions) with Full Annunciators
  • LCD Dimensions: 1.4" x 5" (35 mm x 130 mm)
  • Accuracy: 10 Digit Internal Accuracy
Request a quote