1.The Large Teacher Protractor is an esential tool for educators, designed to facilitate clear and accurate teaching of geometric concepts on dry erase boards. 2.This Big Digital Design Math Teaching Compass Protractor is ideal for engineers and teachers, providing multifunctional use in classrooms and professional settings. 3.Its large size ensures visibility for all students, enhancing learning experiences in mathematics and engineering.Product specifications:50cm pointer protractor: 230g, 45.5x25x2cm/17.91x9.84x0.79 inchesMagnetic 50cm pointer protractor: 252g, 45.5x25x2cm/17.91x9.84x0.79 inchesProduct : ABSAttention:Due to differences in lighting and screen settings, the product color may slightly differ from the image.Due to differences in manual measurements, please allow to size differences of 1-2cm.Product List:Multi functional protractor * 1 Large Teacher Protractor Math Teaching Tool Big Digital Design Large Chalkboard Teaching Protractor Multifunctional Compass ProtractorClassroom Protractor Tool Blackboard Teaching Protractor Protractor Math Measuring Tool Multifunctional Math Teaching ToolTeaching Protractor 50cm Pointer Protractor Magnetic Protractor Math Measuring Tool Dry Erase Board Teaching Protractor Big Digital Design