Unique 360° Swing Arm Angle Measuring Protractor is fantastic for young students learning about angles!
Unique 360° Swing Arm Angle Measuring Protractor is fantastic for young students learning about angles because they can spin the swing arm around to visually track angles. Unique rotating arm points out the desired angle for mistake-proof measuring and makes it much easier to visually understand the difference between angles. Protractor features a centering index point for easy measuring of angles from a given point and beveled edges for clean, accurate lines. Protractor diameter is 4″
