I agree with the idea that at minimum use the inexpensive Brownell wall gauge. It is imperfect, but can provide a good working answer. I agree with Chuck's recomendation to increase the tension a bit. I changed out the dial gauge for a digital dwell gauge from Harbor Freight that makes reading the thickness much easier and was inexpensive to boot.

Last edited by old colonel; 01/01/12 11:31 AM.

Michael Dittamo
Topeka, KS