Butterfly 360-Degree Acrylic Protractor – 20 cm Diameter with 4 Center Holes

This 360° full-circle protractor has a large 20 cm diameter, making it ideal for clearer and more detailed angle measurements.
It is equipped with 4 center holes to help position the center point and also function as grips for better stability during use.
Made from high-quality transparent acrylic, it is more durable, sturdy, and precise than ordinary plastic protractors.