Butterfly 180-Degree Acrylic Protractor – 15 cm Diameter with Center Hole

This 180° acrylic protractor with a 15 cm diameter features a semicircular design and is made from high-quality transparent acrylic that is stronger and more durable than regular plastic.
It is equipped with a hole in the center to accurately determine the midpoint, and the bottom edge is designed as a straight ruler, making it more multifunctional.