Re: Are US Optics levels reliable?
There are a couple problems I have with the design of the folding anti cant device. Problem one is the O-ring, I understand why it was used, but unless all the tension is taken up and I get a metal to metal contact, the true level indication is hit and miss. Problem two is partially related to problem one, when you fold the device closed, it self tightens, when you open it the opposite occurs. If the second roblem worked opposite, it would be a benefit not a problem, you would need to use a left hand threaded screw to accomplish this. Bottom line, make sure the pivot screw is tight when using the device. It only takes 1 half way decent hit to bend things slightly and get everything out of wack. If your capenters level has proven trust worthy in the past, it is probably telling you the truth.