Builder, how nice to hear from you and how nice to have met you at the Stamford Show. The Manson "tuning fork" wall thickness gauge sold by Brownell's at such a reasonable price does take some patience and is better used when hanging from a doorframe or raised tailgate of an Explorer or other SUV. The Galazan wall thickness gauge is a wonder, but can't be conveniently used at a gun show. As difficult as it is to get an accurate wall thickness measurement from the Manson tool, it is a good alternative at $90.00 to paying $6500.00 for a shotgun at a gun show and not measuring anything but the bore. I only own a Manson tool, two Galazan bore micrometers, and a "small hole gauge" and micrometer for .410 bores, and a 36" tape. I will never get screwed at a gun show because of bore problems and my total investment is about $300.00. I have lent these tools out at shows for prospective purchase of hundreds of thousands of dollars worth of shotguns and no one is complaining.
