Range: the protractor measures 0 ~ 180 degrees from left to right and from right to left; Protractors marked in inches and centimeters make measurement easy 2 packs of protractor: quantity practical, one at home, one at school or office; Suitable for geometric drawing and math classes Size and material: plastic protractor size is 6 inches, clear color; Students protractor center hollow, easy to hold Easy to use: you can use the geometric protractor to quickly obtain the Angle and length; Easy to carry, can be installed in schoolbag, pencil case, math tool box, backpack and so on. Widely used: protractor is suitable for painting, measurement, operation, technical drawing; You can send them to your friends and classmates Size: Outer diameter 15CM Color: Transparent Weight: About 100g