Technical Information Operations/Functionality: Dimension Conversion Trigonometry Weight per Volume Calculation Roof/Rafter/Frame/Angle/Stair/Stud Calculation Arc/Circumference/Segment Calculation D:M:S to Decimal Degree Conversion Circles/Arches/Columns/Cones/Pillars/Windows/Post-Holes Calculation Corner and Bi-sect Angles/Side Length/Perimeter/Area Calculation Lumber Estimate Exponent Backspace Constant Cost per Unit Memory Review Addition Subtraction Multiplication Division Pi Percent Inversion Square Square Root Calculator Features: Auto Power Off Slide-on Hard Case Built-in Memory Battery Information Power Source: Battery Battery Included: Yes Physical Characteristics Height: 5.7 Width: 3 Depth: 0.7 Length: 3 Weight (Approximate): 4.600 oz Miscellaneous Package Contents: Construction Master Pro Trig Protective Hard Slide Cover User s Guide Reference Guide Long-Life Batteries CD-ROM Warranty Limited Warranty: 1 Year