In order to find out if his Fluke 12E+ multimeter ... In addition to the dial position for temperature measurement, [AvE] found that one of the hidden button contacts would enable frequency ...

Fluke meters have been around for a long, long time. Heck, we’ve got a Fluke 73 that we bought back in 1985 that’s still a daily driver. But just because they’ve been making them forever ...