The math learning beam compass is perfect for math teachers, manufactured with high-grade and sturdy ABS material, practical and , which has clear scales to make sure your drawing is correct. With the math compass tool, you can have a demonstration of solving the math geometric problems. Features -Color:Yellow -Material:ABS -Size:46.00X7.00X4.00cm/18.08X2.75X1.57in - Using high-grade and sturdy ABS material, and firm, suitable for measuring use. - The beam compass is suitable for architecture, professional applications, painting, drafting, technical illustrations, measurement, etc. - Long handle design and with suction cup tip, which is a good draw tool for blackboard. - Lightweight and portable, it is very convenient for you to carry with in everywhere you like. - Simple in structure, easy to use, strong and smooth surface, you can use it with confidence. Package list: 1 Compass