INCRA Marking Rule, 18 in. is a marking tool designed to bring precision and ease to your woodworking and measuring tasks. This 18-inch rule features precision-engineered marking holes and slots at every graduation, allowing you to guide your pencil or scribe with confidence and accuracy. The unique design makes it nearly impossible to slip off the mark, ensuring your measurements are exact. Simply position the rule on your workpiece, place a sharp pencil or scribe in the desired hole or slot, and make your mark without any eye strain. Graduated in 1/32" increments and crafted from durable stainless steel, this marking rule is built to last and made in the USA. Once you try the INCRA Marking Rule, you may want to use an ordinary rule again. Model Number: RULE18