Acrylic Ruler Right Triangle 8" Quarter-Square Triangles Omnigrip

The Omnigrid 8" quarter square triangle ruler is used to create quarter-square triangles for finished quilt blocks up to 8"; it has seam allowance calculations included in the measurements. 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 quarter 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