These templates can be applied in school, home, library, study room, office etc. Perfect measuring tool for students, artists, designers, architects, engineers, mathematics, network technique, fractional measurement, Contractors, or school learning,and more. All-in-one Layout: with multiple sizes on the template, the clear plastic design allows visibility through, and the black markings make it easy to read, plus designed for easy workpiece alignment. Circle Templates: Including round woodworking 8 sizes：1/4”、1/2”、3/4”、1"、1-1/4"、1-1/2"、1-3/4”、2", the complete combination meets the needs of various occasions, you can choose the right size to work according to your needs. Material: The clear protractor ruler set is made of quality plastic, durable and sturdy, not easy to break and crack, with a certain thickness controlled, adopt metric system, use centimeter as scale unit, the minimum accuracy is 1mm. Material: The clear protractor ruler set is made of quality plastic, durable and sturdy, not easy to break and crack, with a certain thickness controlled, adopt metric system, use centimeter as scale unit, the minimum accuracy is 1mm. Wide Application: These templates can be applied in school, home, library, study room, office etc. Perfect measuring tool for students, artists, designers, architects, engineers, mathematics, network technique, fractional measurement, Contractors, or school learning,and more.