Jackson Jumbo Radius Marker with 40" Radius

Centering heads aid in the settings of centerlines, establishing angles and marks for butt-ins, locating points inside pipes and tanks, laying out keyways, and measuring declivity.

• Made with an anodized rust proof aluminum for lasting protection
• Arms are precisely aligned with spring tension joints to guarantee accuracy and rigidity
• Holder accommodates flat or round soapstone and pencils; Soapstone crayon is included
• Folding design - three smaller models fit comfortably in the shirt pocket
• Heavy duty friction joints maintain rigidity and precision; Pipe Diameter: Up to 40" in Radius