Designed for use with Jumbo Contour Markers, the adapter simplifies handling and increases capacity design; Allowing the use of all four sides of the contour marker and allowing marking on small tube diameters or old welding or wrapped tubes. Perfect for use with the #4 Jumbo Contour Marker, this product offers designs with compound angles through a single adjustment, or any degree of takeoff at elbows and rotates up to 90 degrees. The Jumbo Contour Marker consists of an X frame, calibrated protractor, and a triple-jointed marking arm adjustable to the line to be scribed. Established in 1933, Jackson Safety has built a century long reputation for delivering the most innovative safety solutions in the welding and personal protective equipment industries. When it comes to providing safety solutions with long-lasting value, durability and comfort, Jackson Safety has set the standard. Whether the need is for welding protection in a steel fabrication environment, head protection on a construction site, or hearing protection at an airport, Jackson Safety provides the widest range of safety choices to meet the needs of every job and every worker.