Helix Shatterproof Plastic Ruler

Helix is a registered trademark.

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Shatterproof Plastic Ruler
Shatterproof Plastic Ruler
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Made of unbreakable plastic, it features 16ths of an inch on one edge, and centimeters and millimeters on the other. Choose from 6" (152 mm) or 12" (305 mm) long ruler.

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