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The Calculated Industries Construction Master 5 Calculator is an excellent tool for professionals in the construction business. With its digital, hand-held features, this calculator is perfect for anyone who needs a powerful solution for calculating complex mathematical calculations. Built with a regular Display Size, the Construction Master 5 Calculator is easy to read and use. It has a battery-powered source, which means you won't need to plug it in to use it. The calculator is small and compact, making it extremely portable.