The 7" Miter Saw Protractor is an invaluable tool for finish carpenters, builders and other tradesmen who require measuring and transferring of angles. It is a low cost solution to eliminate mathematical calculations, guesswork and material waste while saving time and providing reliable, accurate results. For mitering or making single butt joint cuts the user simply adjusts the tool legs to the work surfaces, reads the angle on the dial face, and sets the miter saw to the reading. The result is a quick, accurate, professional miter cut. The protractor is constructed of durable engineered plastic designed to withstand demanding jobsite environments. The 7" legs are tensioned and feature a Teflonr "O" ring for smooth, precise operation. The easy-to-read dial scales are laser-engraved for exceptional accuracy.