What is a Protractor?
Tue, Sep 19, 2023
Protractor, also known as protractor. It is an angle measuring instrument that uses a movable ruler to measure the rotation of the surface relative to the measuring surface of the base ruler, and reads the angle separating the two measuring surfaces. It is an angle measuring tool used to measure the internal and external angles of precision parts or to perform angle marking. It is suitable for measuring internal and external angles in mechanical processing, and can measure 0 ° -320 ° external angles and 40 ° -130 ° internal angles.
