Good evening everyone!

Quick question, are there any smiths within reasonable driving distance of southeastern PA who have wall thickness gauges? I don't particularly want to shell out $500 for a gauge and am happy to pay someone to do measurements for me! If not, I will probably buy one since I have a weird addiction that requires I buy a vintage SxSs every few months. In any case, I currently have a few vintage shotguns that I want to ensure haven't been honed to ludicrous levels and will blow up on my hand/face if I decide to fire them. Thank you!