Description 180 degree Protractor measuring tool for home teaching, school classroom, office, etc. Wide uses. A must-have for architects builders, electrician, teachers, interior designers, engineers, students, etc. Easily meet your different needs, bring more conveniences, give you a pleasant using experience. Features -Color:Assorted Color -Material:ABS -Size:15.00X8.60X0.10cm/5.89X3.38X0.04in - Suitable for most students to use, assisting them in learning math and geometry, also suitable for teachers to use. - Specially designed for people who need to measure size, draw, design or something. - Using the Half Circle Protractors you can paint various beautiful and practical patterns like circles, etc. - A wonderful gift for your family, friends and co-workers who need a template ruler. - It is manufactured with ABS material, to ensure its durability and practicability. Suitable for most students to use, assisting them in learning math and geometry, also suitable for teachers to use. Specially designed for people who need to measure size, draw, design or something. Using the Half Circle Protractors you can paint various beautiful and practical patterns like circles, etc. A wonderful gift for your family, friends and co-workers who need a template ruler. It is manufactured with ABS material, to ensure its durability and practicability.