Make Nine Patch blocks with this ruler! What could be easier than making Nine Patch blocks? Making Nine Patch blocks with From Marti Michell Nine Patch Rulers! Available in 7 different sizes. These innovative rulers improve on strip techniques as they guide you in cutting very accurate strip widths. (What size strip would you cut for a 5" finished Nine Patch? No need to know, we did the math!) Next, you get perfect “second strip” cuts and can use the tool itself to confirm exact finished block size. Fussy cut single squares or block size squares, too. Deeply etched amber acrylic.