Jackson® Safety Curve-O-Mark® Pipe Marking Tools are used by pipe fitters and welders alike for an economical precision tool used to mark straight lines around pipes or to mark a straight edge prior to welding or cutting.

• Includes X-frame calibrated protractor and a triple-jointed marking arm
• No more complicated mathematical formulas no more cut and try and no more needless material waste
• The protractor is calibrated on both sides - one in degrees and one in rise-inches-per foot