The Westalee 6" Adjustable Corner Setting Triangle with Locking Fabric Guide is designed for the "setting" triangle for on point quilts.
For the diagonal set quilt, the measurements have been calculated to give you the size of the desired finished triangle.
Judy's Note: When using this product upside down for measuring, in conjunction with the straight rulers, as per the instructions, may I suggest not to use the Thumb Screws since they would not then allow stability on the cutting mat. |