The math drafting ruler is made from quality plastic, super soft, flexible Anti-break, wear resistant, lightweight and portable Very suitable for high school students, boys, girls, teens, or teachers geometric drawing, measuring, math drafting, etc The soft ruler is not only used for the measurement of distance, length, but also for measuring circumference of sphericals, the diameter cylinders, or other geometric shapes Accurately double sides scale This math geometry drawing tool is much more conveneint for student to measure, draw, draft, mark keypoints, etc Ruler Measuring Range: 0-15cm Enough for school students math/grahic design drawing use Great for school, office, architects, engineers, artists, designers, students, teachers and so on Wonderful back to school gift, Class reward, Nice gift for kids, Manufacturer: MINGLEA