Omnigrip 12 1/2" Square Ruler
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Use for cutting and squaring. Right and left hand numbering and angle system. Diagonal line for triangle cuts. Extra 1⁄2 Inch on two sides for seam allowance. Perfect for secondary cutting and checking finish size of blocks. For use with rotary cutters & straight edge blades. Transparent, neon green double-sight lines that seem to glow on both light and dark fabrics.. Non-slip backing.