The Pro 360 Digital Protractor from M-D Building Products is a high precision measuring tool that provides immediate reading of all angles in all 360 degrees.  Assembled in the USA, the heart of these products is a custom sensor inclinometer.  With over 1, 500,000 sold, this proven technology is the only product of its kind of MD that actually meets high accuracy specifications.  No foreign knock-off even meets their own specifications.  Backed by a 1 year limited warranty and a rugged aluminum frame this high precision protractor is great for machine set-up or unlimited other industrial applications.