Bottle cap go/no go gauge.
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Previously:
https://www.homemadetools.net/forum/...825#post105524
https://www.homemadetools.net/forum/...372#post127043
https://www.homemadetools.net/forum/...637#post193497
https://www.homemadetools.net/forum/...078#post184275
https://www.homemadetools.net/forum/...486#post193008
