30° 60° 90° Semicircle Protractor Plastic Disc Protractor Angle Ruler Equipped with a Screw Cap to Fix the Angle
Aluminum alloy material, wear-resistant and durable, surface black oxidation treatment. Equipped with a fixed nut, the nut can be tightened to fix the angle, easy to use. There are two scales printed on the ruler to meet different needs. Equipped with 30°, 60°, 90° and other angles, it is more convenient to measure the angle. The back slide rail is concave design, and the slider is flat and aligned with the back.
1 x Semicircle Protractor