Toyvian Geometric Ruler Set 2 PCS 360 Degree Angle Viewer Protractor Circle Protractor Drafting Tools Swing Arm Angle Protractor for Kids Classroom Geometric Ruler

Circles: Once you locate the center, use a nail to hold the protractor in place. Choose the diameter circle you would to mark, then easily mark a circle even on uneven timber
Easy to Read: Protractor with easy to read numbers that record angles precisely and quickly
360 Degree Protractor: Not just a center finder, you can also use the 360 degree protractor for angle marking or measuring, with clearly printed radial lines every
: The surface of this plastic scale ruler is laminated with center for durability.Smooth in surface without any burr, and comfortable to use, will not hurt your skin
Multipurpose: This measuring tool is for artists, designers, architects, engineers, and students.You can give it as a for your kids to learn math, an easy and convenient save their time

Hello,