"CALCULATED" ADVANCED CONSTRUCTION CALCULATOR Master Pro, Advanced Construction Calculator, Works In & Converts Between All Building Dimensional Formats, Custom Set Fractions, Includes Protective Hard Case, User Guide, Field Guide & Long Life Batteries.Features:- Dimensional Math and Conversions Work Directly in Feet, Inches, Fractions, Yards and Metric Handles All Fractions: 1/2, 1/4, 1/8, 1/16, 1/32, 1/64's Instant Area and Volume Easy Right Angle and Rafter Calculations Including Slopes, Square-Ups Common Rafter Lengths Regular and Irregular Hip/Valley Rafter Lengths Regular and Irregular Jack Rafter Lengths Complete & Enhanced Stair Riser/Tread Solutions Board Feet/Lumber Estimation Per Unit Material Cost Six Material Estimation Functions: Block, Brick, Column, Cone, Footing, Roof Custom Rafter Settings Ascending or Descending Lengths Plumb, Level and Cheek Cut Angles Improved Rake Wall Function Advanced Circle Solutions D:M:S to Decimal Degree Conversions Acres, Kilograms, Pounds, Tons and Metric Tons Conversions Handy Backspace Key Memory Storage Keys User Set Preferences Paperless Tape Works as a Regular Calculator.