Protractor 6", 180°

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Our 180 degree protractor features an open center and well defined graduations for quick, easy and accurate measurements. Made of strong acrylic for durability and easy reading. Pr otractor includes a 6" ruler on outer edge and 10cm ruler inside the inner edge for convenient measuring. - Transparent strong acrylic material allows print to show through for accurate measurements and makes for a durable protractor. - Sharply defined graduations help prevent reading errors - Perfect for school math use - Includes 6" and 10cm ruler on straight edge side - Comes in 4 assorted transparent colors - 1 pcs / blister - bulk packaging: 20 pcs / inner; 240 pcs / carton Show more