Description: 【Quality Material】: This Draw Tool is made from quality PP material, which is wear resistant and not easy to deform, allowing for long term repeated use. 【Stable Design】: 1 side of this Math Teaching Compass features a sturdy suction cup for slip resistance, providing good and stable assistance for your drawing. 【Easy to Use】: This Drawing Compass has a compact structure and lightweight design, making it easy to grip and carry. Plus, its smooth angle adjustment makes it user friendly. 【Wide Application】: This Teaching Tool is great for teachers, designers, carpenters, and others who need to draw or drafting regularly. 【Practical Gift】: This Math Geometry Tool makes a practical gift accessory for family members, friends, or teachers. Specification: Material: PP Size Chart: Length 45cm/17.72inch Package Includes: 1 Math Teaching Compass Note: Please allow slightly errors 1-2cm differences due to manual measurement.