The Omnigrid® 6” half square triangle ruler is used to create half-square triangles for finished quilt blocks up to 6”; it has seam allowance calculations included in the measurements; it is easy to manipulate for smaller triangles when quilting.

• In general, Omnigrid triangle rulers are used to cut half-square and quarter-square triangles; seam allowances are included in the measurements, which are based on the finished size of the quilt block
• Use with a rotary cutter or a straight-edge blade
• The half square triangle ruler has the following standard Omnigrid features:
  • 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