A right triangle for creating 1/2in square triangles up to 8in which are then used to create up to 8in diagonal 1/2 squares.
The Omnigrid 8in half square triangle ruler is used to create half-square triangles for finished quilt blocks up to 8?; 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