C6000 Advanced Construction Calculator by Victor Technology, LLC VCTC6000 | OnTimeSupplies.com
Amazon.com: Calculated Industries 4065 Construction Master Pro Advanced Construction Math Feet-inch-Fraction Calculator for Contractors, Estimators, Builders, Framers, Remodelers, Renovators and Carpenters : Office Products
Johnson Level Calculator in the Calculators department at Lowes.com