Construction Calculator, Portable, Length 5 5/8 in, Width 3 in, Depth 5/8 in, Display Digits 11, Display LCD, Display Dimensions 3/4 in H x 2 1/2 in W, Area, Built-In Right-Angle Solutions, Calculates Feet/Inch/Fraction, Framing, Linear, Rafter, Roof, Stair Layouts, Volume, For Building, Construction, Engineering, and Design Professionals, Auto Shutoff, Backspace Key, Built-In Functions, Easy-To-Use, Memory, Paperless Tape To Review Last Entries, Power Supply Battery