Teachables Protractor - 360°, Class SetUnlock the full circle of learning with the Protractor 360 Basic Class Set! This set includes both half circle and full circle protractors, ideal for measuring angles and working with geometry in the classroom. With clear black measurements and a shatterproof design, these protractors are durable and perfect for student use. Ideal for both primary and high school students, this set ensures each student has their own tool for measuring angles