An easy to use marking tool mostly used by pipe fitters and welders; This is an economical tool used for marking straight lines around pipes or for use of a straight edge prior to welding or cutting. Made from a flexible gasket material, this extra-large Wrap-A-Round tool has good resistance to low or high temperatures. Printed with a scale in inches, an inch chart, tangent chart and other helpful markings to help you make straight lines around pipes; This flexible tool has a marking scale from 5" to 7' and is designed for pipe diameters of 4" to 12".