The Omnigrip 12½" square ruler is a go-to tool for accurate cutting and squaring. It features a diagonal line for triangle cuts and an extra ½" on two sides, making it easy to account for seam allowances.

Square rulers like this one are commonly used for secondary cutting of strips and for squaring up finished quilt blocks, but it’s just as useful for general sewing, quilting, and other fabric-based DIY projects. Designed to be used with a rotary cutter or straight-edge blade.

Features include:
• Patented non-slip backing to help keep the ruler in place while cutting
• Clear edge markings for accurate measuring
• Laser-cut edges for smooth, precise cuts
• Double-sight lines that show up on both light and dark fabrics
• Diagonal line for triangle cuts