Pipe Mic Extension Arm 3' (1736ARM)

Measurements are more accurate because you are measuring with a vertical plumb rod. - Made for Crain 25-foot SVR & USL rods and our new double sided Pipe-Mic II rod - Made of lightweight (two pounds) non-rusting aircraft aluminum - No tools needed to attach to rod - Slides on and off in seconds The new round-foot design slices through material at bottom of pipe and ensures accurate invert and pipe diameter measurement. By pulling a pin, in just seconds you can go from zero to one-foot vertical offset for clearance under rod.