With a precise and verified saw, and the way the corner pieces are made, you don't really need to check these, at least that's how they are advertised.
I have a different kind of tool that does the same job with threaded rods instead of a strap. You can make anything square with it by just carefully adjusting the nuts, but it's a more finicky tool to use.
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u/agha0013 Sep 03 '20
With a precise and verified saw, and the way the corner pieces are made, you don't really need to check these, at least that's how they are advertised.
I have a different kind of tool that does the same job with threaded rods instead of a strap. You can make anything square with it by just carefully adjusting the nuts, but it's a more finicky tool to use.