Construction Master Pro DT Desktop Model
CI44080

We've taken the best features of the original Construction Master IV, added some useful new "Pro" functions, and made it bigger and easier to use! An essential tool for your office desktop. It's the most complete Builder's Calculator on the market!

In the office or at the drafting table, the Construction Master Pro--Desktop helps get the job done right the first time! Unlike a regular calculator, the Construction Master Pro--Desktop has large and intuitively labeled "construction keys" and a format that is so simple, even the novice user will find it easy to solve hundreds of problems directly in feet, inches and fractions!

• Dimensional Math & Conversions
  Works in all dimensional formats: quickly add, subtract, multiply, divide and convert in feet-inches-fractions, decimal feet, decimal inches, inches and fractions, yards, meters, centimeters, millimeters, board feet, as well as square and cubic formats.
• Handles all fractions-1/2's, 1/4's, 1/8's, 1/16's, 1/32's, 1/64's
  Work in fractions for all sorts of dimension problems. You can even set fraction denominators to display your desired accuracy (in above fraction formats).
• Complete Right-Angle Solutions
  Instant square-ups, slopes, rafter length and rake wall solutions. No more formulas or memorization of Pythagorean theorem! Pitch, Rise, Run, Diagonal/Common, Hip/Valley and Jack keys find rafter lengths. Also solves for lengths of irregular Hip/Valley and Jack rafters, as well as rafter cutting angles!
• Automatic Stair Calculations
  Finds number of risers, treads, riser height, tread width, and any underage or overage for stairway layouts. Now calculates an entire stairway based on the entry of a floor-to-floor rise. Also calculates stringer length and angle of incline.
• Complete Circle Solutions
  Solves circumference, circle area, arc lengths for columns, post holes, pillars, as well as solving circular segments.
• Instant Area & Volume Calculations
  For fast & accurate material estimates, such as volume of concrete.
• Trigonometric Functions
  Sine, cosine, tangent, arcsine, arccosine, arctangent have been added, in case you need additional trig. solutions.
• Weight per Volume Key
  Lets you convert between weights (lbs, tons, kg) and find weights of any material (e.g., tons per cubic yard).
• Board Feet Key
  Helps estimate material amounts and costs of lumber.
• Enhanced Jack Rafters
  Display jack rafter lengths in ascending or descending order for regular- or irregular-pitched roofs. Or set jacks spaced to mate.
• Enhanced Rake Walls
  Display rake wall stud lengths in ascending or descending order. Or include a base height.
• New Material Estimation Keys
  -Block key finds quantity of concrete blocks
  -Brick key finds quantity of "Face" or "Paver" bricks
  -Column key calculates volume and surface areas of columns
  -Cone key calculates volume and surface areas of cones
  -Roof key finds roof area and quantity of bundles of shingles
• "Smart" Fraction Setting
  Saves keystrokes by entering preset fraction denominators for you, from 1/2 to 1/64.
• User-Set Preferences
  Allows user to set preferred dimensional formats and customize rafter/rake wall calculations.
• Three Memory Storage Keys
• Paperless Tape
  Lets you review the last 20 entries
• Standard Calculator
• Large, Multi-Position Tilt Display
• Easy-to-Read User's Guide
• Long-Life Battery