Curv-O-Mark Pipe Marker is an easy-to-use marking tool designed for pipe fitters and welders. It provides an economical measuring tool for setting center lines, establishing angles and marks for butt-ins, locating points inside pipes and tanks, laying out keyways, and measuring declivity.Standard sizeThe Curv-O-Mark Standard #6 model may be used on pipes and tanks that measure 1/2 inch in diameter or larger.Accurate placementThe center finder has a 4 inch Y-type head that conforms to pipe curvature for precise placement.Best operationUse this manual hardened centering pin angle finder with a small hammer or mallet to tap the pin in for the most effective pipe marking.Applications- Mark centerlines and angles on pipe runs during fabrication or installation to ensure proper alignment of butt joints.- Locate interior points inside pipes and tanks for drilling, tapping, or feature placement.- Lay out keyways on shafts or pipe ends and assess declivity or slope requirements for piping.