The Omnigrip 12.5in square has a diagonal line for triangle cuts; the ruler has extra 1/2in on two sides for seam allowance. Ideal for secondary cutting of strips, and to square up finished quilt blocks. Heavy-duty durable acrylic material. Diagonal line for triangle cuts; Left- and right-hand numbering and angle system.

• Color: Clear
• Made of: Acrylic
• Use: Quilting Ruler
• Size: 12.5in x 12.5in
• Included: One Ruler