Charles Leonard® Open Center Protractor - Clear plastic protractor is ideal for all young mathematicians. Protractor features an open center. Students will easily be able to identify angles from 0 to 180 degrees with the protractors sharply defined graduations which is easy to read and helps minimize visual errors. Ruler Base—Metric and SAE graduations along 6" ruler base. Degree Graduations: 1°; Material(s): Plastic; Ruler Size: 6" Ruler Edge; Color(s): Clear.
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