Use this no-flip, full triangle ruler to cut corner and setting triangles for 2.5" to 10" finished size blocks.
Why Do We Need Diagonal Set Triangle Rulers?
Diagonal set quilts have two different half-square triangles: one for the corners and one for the setting triangles. Use this “no math” ruler to cut both triangles from the same-width strip of fabric.
a = The finished block size is calculated and includes ¼″ seam allowances.
b = The corner triangles are cut with the legs on straight grain.
c = The setting triangles that fill in the ends of the diagonal rows are cut with the hypotenuse on the straight grain.
Watch Marti Demonstrate How to Use the Rulers