Calculated Industries 4067 Construction Master Plus EZ Construction-Math Prompting Calculator Solutions for more than 140 building calculations and quantities and costs for eight common construction materials Basic functions give you solutions for your everyday construction calculations. Advanced functions will help you with unusual construction problems Great for builders, contractors, carpenters, framers, cabinetry, formwork, trim, remodeling, drywall, fencing tile and grout, paving, roofing and more Work in and convert between building dimensions Includes Armadillo Gear protective hard case, long-life CR2025 battery, Quick Reference Guide and easy-to-follow Pocket Reference Guide