SUNTECH GSM cutter is the genweigh GSM manual rotary textile GSM cutter for determining the GSM of fabrics by its rotary 4 blade design.You can cut a perfect textile circle by simply unlock the unit and press down lightly to rotate 90 degrees. The a rubber cutting mat and double sided flexible razor blades make a easiest, most economical way to cut fabrics for GSM determination. You may notice the blade direction when using.