Calculated Industries Material Estimator Project Calculator is an essential tool designed for contractors, tradespeople, and estimators who need to accurately estimate materials and costs for a variety of projects including concrete, fences, decks, bricks, tile, flooring, gravel, painting, drywall, and paneling. This calculator helps users quickly and easily determine material costs and allowances, ensuring they purchase exactly the materials needed. By reducing estimating errors, it saves both time and money on every project. Powered by solar and battery, it reliable performance in any work environment. Its compact size measures 11-1/2" in length, 7" in breadth, and 1" in thickness, making it convenient to carry and use on-site. Model Number: 4019