Multi-Function Magnetic Center ScribeHard to determine accurate marking lines on your woodwork? Multi Function Magnetic Center Scriber allows you to mark a perfectly centered line along the face or edge of boards up to 64mm thick. Easy to apply Just insert your pencil into the center hole, rotate and scribe. You can also move the scriber to draw 8 different sizes edge by marking lines from 1 16'' to 1 2'' increments. It comes with a strong integral magnet. You can hold it on any iron