For engineers and architects, the geometry circle protractor is a must-have drafting tool. Its measurement capability allows for precise angle calculations, essential for drawings. The clear plastic material ensures visibility. This protractor is perfect for professional, providing accuracy and ease of use. Features -Color:Transparent -Material:Plastic -Size:30.00X30.00X0.10cm/11.79X11.79X0.04in -Size:20.00X20.00X0.10cm/7.86X7.86X0.04in -Size:15.00X15.00X0.10cm/5.89X5.89X0.04in -Size:10.00X10.00X0.10cm/3.93X3.93X0.04in -Accurate angles: the protractor provides precise angle measurements, essential for math, geometry, and engineering tasks -Transparent design: the clear plastic design ensures you can see clearly, improving accuracy -Sturdy construction: made from plastic, this protractor is designed to withstand regular use without breaking or bending -Versatile application: perfect for woodworking, drafting, and other craftwork, this protractor is a versatile tool for -A set: the set is perfect for settings, providing enough protractors for use Package list: 4 x circle protractors