The Calculated Industries Construction Master Pro V3.0 Model 4065 Calculator is a handheld electronic calculator designed specifically for the construction industry. It features a regular-sized LCD display and is powered by batteries. This calculator, manufactured by Calculated Industries in China, is equipped with various functions and tools tailored for construction professionals to accurately calculate and estimate quantities, costs, and other important measurements on the job site. Its compact and portable design makes it convenient to use in various construction settings, making it a valuable tool for the industry.