Best Selling 0-180 Degree Angle Ruler 90X150mm Angle Finder Goniometer

The angle you want to draw is how many degrees, just point at the scale of how many degrees on the protractor, and then draw a ray through the point you just drew with the endpoint of the ray as the endpoint. Also, when you click a point, pay attention to whether the position of your zero mark is in the outer circle or the inner circle.

As the name implies, it is an instrument used to measure the degree of angle, which can measure angle, inclination, verticality and levelness. In addition, the protractor is also a drawing tool, which can draw angles, vertical lines and parallel lines. It can be used as an internal and external right-angle ruler to open and close. It can also be used as a long and short ruler to read accurately and intuitively, and draw a circular dimension of the specified size. The protractor is usually made of plastic or iron and is often used with a compass.