16 1/2 Inch x 16 1/2 Inch Omnigrip Ruler

The Omnigrip 16-1/2 inch square has a diagonal line for triangle cuts; the ruler has extra ½ inch 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 16-1/2 inch 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