Omnigrid 6-1/2-Inch by 6-1/2-Inch Quilter's Square

The Omnigrid 6-1/2 x 6-1/2 ruler is a popular baby quilt block size; it features a 3 x 3 section of 1/8 grid markings, and a ½ seam allowance on 2 sides; it is used for cutting and checking half and quarter square triangles.
In general, Omnigrid square rulers are used for secondary cutting of strips, and to square up finished quilt blocks
Use with a rotary cutter or a straight-edge blade
The 6-1/2 x 6-1/2 ruler has the following standard Omnigrid features:
Diagonal angle line
Edge markings for accurate measuring
Laser cut edges for smooth, deep cutting
Patented double-sight lines that show up on light and dark fabrics
Heavy-duty durable acrylic material
Left- and right-hand numbering and angle system