Description Centering Heads aid in the setting of centerlines, establishing angles and marks for butt-ins, locating points inside pipes and tanks, laying out keyways and measuring declivity The Jumbo Centering Head is for pipes with 1 inch diameter and up. It has an 8 inch Y-type head and an adjustable dial bubble protractor (DSL). A spring loaded hardened centering pin eliminates the need for a hammer. Just make the alignment and press the trigger.
