CM Designs-Add An Eight Ruler. The Add-An-Eighth combines the speed of rotary cutting quilt pieces with the accuracy of using templates. Once your templates are made, the Add-An-Eighth, with its specially designed lip, will automatically add the customary .125 inch seam allowance to any straight angle and provide a straight edge for your rotary cutter. This package contains one 6x1 inch ruler. Made in USA.
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