Helix Swing Arm Protractor

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Helix Swing Arm Protractor
Helix Swing Arm Protractor
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The swinging arm of this protractor rotates 180°, making it easy to measure and draw accurate angles. You can measure from left to right or right to left. The protractor also includes a 6" ruler along the bottom edge with inch and centimeter markings. Made of transparent, shatter-resista...

® Helix is a registered trademark.

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