Measurements are more accurate because you are measuring with a vertical plumb rod
Made for Seco 25' SVR, USL rods, and ChrisNik's 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
Round foot design slices through material at bottom of pipe and insures accurate invert and pipe diameter measurement
If you need clearance under rod and a pipe that is hard to reach you can interchange the 24" arm that comes standard, with the Pipe-Mic II, with a 36" arm extension (sold separately)