The Jackson #4 Jumbo Contour Marker, model SUW-14773, combines a calibrated protractor with an adjustable bubble dial for locating pipe centre lines. Designed for pipe diameters of 8" to 48", it is used with a soapstone crayon to mark the pipe. Its durable aluminum construction keeps the tool lightweight, while a folding design supports portability. A web strap secures the marker during use.

• Jumbo (#4) size for pipes with diameters from 8" to 48".
• Calibrated protractor and adjustable bubble dial support centre-line location.
• Durable, lightweight aluminum body folds for transport.
• Web strap holds the tool in position for marking with a soapstone crayon.
• Package contains one Jackson Jumbo Contour Marker.