The Omnigrid 4-1/2? x 4-1/2? ruler with 1/8" grid features an extra ½? width for seam allowances and is a great template for 4? finished blocks; it is used to cut and square blocks 4-1/2? and under, and to trim and square foundation piecing blocks.
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 4-1/2? x 4-1/2? ruler has the following standard Omnigrid features:
1/8? grid markings for drafting and cutting
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