Butterfly 360-Degree Protractor – 12 cm Diameter with 2 Center Holes

This 360° acrylic protractor is designed in a full circular shape with a 12 cm diameter.
It features two holes in the center to make it easier to determine the midpoint and measure angles with precision.
Made from high-quality transparent acrylic, it is strong, durable, and easy to use for learning activities as well as technical drawing.