Chrisnik Pipe Mic II

Features:
- Pin setting for measuring a 1 ft vertical offset: By pulling a pin you can go from 0 to 1ft vertical offset for clearance under rod
- New round foot design slices through material at the bottom of the pipe and insures accurate invert and pipe diameter measurement
- Measures the depth of pipe invert from top of rim
- Measurements are more accurate because you are measuring with vertically plumb rod
- 24" measuring arm can be extended to 36" by adding 1ft extension (sold separately)
- Made of lightweight (2 lb) non-rusting aircraft aluminum
- Made for Crain 25' SVR and USL rods
- No tools needed to attach to rod
- Slides on and off rod in seconds
To use:
- You can direct read the depth of the invert when the pin is set at "zero offset" on the Pipe Mic.
- If you need clearance under rod to measure an invert move the pin to "1' vertical offset hole"
- If you need clearance under rod and a pipe that is hard to reach you can add a 1 ft.
To size a pipe:
- The foot is 0.33 or 4". Take the reading from the rim, pull up and take reading plus 0.33 and that is your pipe size.
- Example: 4" Pipe = 0.00 movement, 6" Pipe = 0.17, 8" Pipe = 0.33, 10" Pipe = 0.50, 12" Pipe = 0.67.