Classroom Set of 50 Student Protractor 180 Degree 6 Inch Ruler Clear Plastic School Math
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These 180 degree clear plastic protractors have both a 6 inch ruler edge and a 10 cm ruler on the open center. Pencil holes are located at the 90 degree mark and 3 inch ruler mark. The black markings clearly define the 1 degree increments making it easy to read. Plotting 0 to 180 degrees can be done left to right and right to left. Great for art or geometry class and home crafts. Pack of 50.