Supreme Ruler. The Ruler Has An Easy Grip Hand And Nonslip Bottom. The Handle Doubles As A Finger Guard. It Features A Durable Metal Edge For Cutting. The Measurements Are In Inches And Centimeters With A Center Alignment Guide. The Transparent Plastic Makes It Easy For Positioning On A Cutting Mat. The Adjustable Placement Guides Are Perfect For Cutting In Multiples. Contains One 18X3.25 Inch Ruler.