The Omnichrome pencil is used for making guidelines. The difference between Omnichrome pencils and Stabilo pencils: They do not leave ghost lines, they do not melt in hot weather, the pencil marks rub off the surface easier, and they do not scratch the surface. They can be purchased individually or 12 to a box. Available in White (108-0), Blue (108-3), Black (108-9), or Red(108-2). (#108)
