[theodoregray]

Unfortunately fixed gauges (feeler gauges, spark gap tools, profile gauges, wire gauge tools, bolt sizers, etc) didn't make it into any of the top-level categories, so they are lumped in with the mess of "Other Tools": https://www.periodictableoftools.com/Categories/Other.html

Some day I might create some new rows, because there are a lot of important categories that are completely absent.