Originally Posted By: PeteM
If you want to see the pitting, then you need an endoscope or a simple inspection tool like the ProVision. I have one sitting here and it has been very helpful. Most internal pitting I have seen is minor, though not all.

If you want to measure the wall thickness in a pitted area, then you need an ultrasonic thickness gage with a corrosion probe.



Pete

Yep. Gotta agree with the above.