I was hesitant to purchase a protractor, but this product proved me wrong. My analysis of the protractor showed that its measurements were precise and incredibly easy to read .The devices clear display and user-friendly design made it a breeze to use. As an industrial and scientific professional, i value accurate measurements, and this product delivers. However, its price is on the higher side compared to similar products in the market. Overall, if you're looking for a reliable protractor, Calculated Industries 7210 AccuMASTER Protractor is an excellent choice..