Hegebeck 360 Degree Clear Protractor 20cm/8 Inch Diameter Plastic Math Protractors Circle Protractors Mathematical Tool for Angle Measurement

[MATERIAL] - The protractor is made of quality transparent plastic; strong and durable; with a smooth surface; not easy to be damaged or broken, [MEASURING RANGE] - Complete 360 degree protractor; the diameter is 20cm/8 inch; accurate to 1mm; can be read from different directions; more convenient, [FEATURES] - The protractor is equipped with inch units; and the scale is 2.8 inch; allowing you to measure degrees at the same time to measure the length, [ADVANTAGE] - The hollow design allows you to better grasp it; the protractor has a quasi-center design in the middle for easy measurement, [USE SCENARIOS] - The clear protractor can be applied for homework; drawing; technical drawing; etc.; students; teachers; artists or engineers will need them