> It's worth noting that most if not all of these odd values seem to be metrications of customary units; I can't seem to think of any examples of the opposite.

> It's worth noting that most if not all of these odd values seem to be metrications of customary units; I can't seem to think of any examples of the opposite. "3.5-inch floppy disks" are actually 90mm (closer to 3.54 in) as they were designed by Sony in Japan