Easy to use marking tool for pipe fitters and welders. Marking measures 5" to 7’ and designed for pipe diameter sizes 4" to 12". Printed with a scale in inches, an inch chart, tangent chart and other helpful markings to help you make a straight line around pipes. Made from flexible gasket material with resistance to heat and cold. Economical tool for marking straight lines around pipe or for use of a straight edge prior to welding or cutting. For nearly a century, professional workers in all walks of life have demanded Jackson Safety for their welding and personal protective equipment needs. The reason is simple. When it comes to providing innovative safety solutions, unparalleled features, long-lasting value, and comfort, Jackson Safety has set the standard.