I get where you’re coming from but as someone who’s worked in the industry where everything is super over regulated, something like this is a huge deal. Not only would they be required to use a feeler gauge. That gauge would need to be tested and calibrated every (where I worked) 2 weeks. The DIY’er in me thinks it’s ridiculous to “calibrate” a piece of metal, but in the industry and others like it, that’s what they’re required to do.
When government auditors come in and see something like this people get fired. They also search deeper because if you’re already doing something that blatant there’s going to be more to be found.