The Omnigrip® 20-1/2" square has a diagonal line for triangle cuts; the ruler has extra ½” on two sides for seam allowance.

• In general, Omnigrip square rulers are used for secondary cutting of strips, and to square up finished quilt blocks
• Use for quilting, sewing and crafts – or any DIY project that calls for cut fabric
• Use with a rotary cutter or a straight-edge blade

The 20-1/2" square ruler has the following standard Omnigrid® / Omnigrip features:

• Patented non-slip backing to hold ruler in place during cutting
• Edge markings for accurate measuring
• Laser cut edges for smooth, deep cutting
• Patented double-sight lines that show up on light and dark fabrics
• Diagonal line for triangle cuts
• Heavy-duty durable acrylic material
• Left- and right-hand numbering and angle system

Omnigrid Tutorial: Omnigrip Ruler Basics

Do not store or transport ruler in direct sunlight - heat or extreme cold. Exercise caution when using and transporting ruler to avoid injury or breakage. Do not clean ruler with chemicals or household cleaners; use soft cloth dampened with plain water.