June Tailor Perfect Half-Square & Quarter-Square Triangles Ruler (Outer Dimensions: 12 1/2" x 10 1/2")

This all-in-one tool from June Tailor is amazing for creating Half-Square and Quarter Square Triangle blocks.

• MARK seams using slots designed to accommodate most fabric marking pens, and then sew.
• CUT sewn squares in half using cutting slot, then press open.
• SQUARE blocks to finished size using printed lines and cutting slots.
• Create blocks in six popular finished sizes from 1" to 6".  
• Made in U.S.A.

Learn more about this here:

June Tailor® Perfect Half-Square and Quarter-Square Triangles Ruler Demonstration Video - YouTube