This multi-sized ruler features two triangles in one. Use the 45 degree side to cut half-square triangles from strips up to 5-1/2 inches wide, creating half-square triangles up to a finished size of 5 inches. Use the 90 degree side to cut quarter triangles that finish up to a 5 inch finished quarter-square triangle. The math required to cut these angles is incorporated into the easy to read black and white markings.
I love Creative grids Rulers the best of all, because the ruler slides across the fabric so it’s easy to position it, but when you push down, the ruler does not move!