Precise measurement: Miter saw's Angle Measurement Protractor provides two scales: a single cut and a miter cut, an external scale for measuring a single cut and an internal scale for measuring a miter cut , a conversion table which allows to convert the values of the angles of the spring and the miter corners. and bevel angles. Exquisite Craftsmanship: O-ring design rotates the joiner protractor finder 360 degrees, ensures the miter saw protractors fit the corner perfectly when measuring operation, accurate reading on the inside or outside corners. The precision laser engraved scale ensures the dial is clear and easy to read. Excellent Material: The miter saw protractor tool is made of aluminum alloy, which has strong wear resistance and corrosion resistance, prolongs service life, 7 inch size and lightweight material make it easy to transport. Wide applications: the miter saw protractor guide can perform applications, such as measuring external angles, measuring internal angles and measuring height angles, it is suitable for the saw protractor to woodworking, metalworking, simple miter cutting, miter cutting, crown-shaped, pipe and other woodworking applications. Miter saw protractor can help you tighten joint surface to connect, bevel cutting of the bevel protractor when creating a woodworking project such as moldings, window trim or drywall installation, make sure you get the perfect joint surface. It can measure the angle of inside corner and outside corner. Comes with a conversion table, makes it easy for you to get the right angle for miter saw cutting. it is also an ideal choice for carpenters, plumbers and all construction industries that need to measure.