Units on a multimeter

OHMS

Measure resistance with this electrical unit named after a German physicist.

A multimeter measures electrical properties, and one of its key functions is checking resistance. The standard unit for resistance is the ohm, which is why the answer is "OHMS"—the plural form since multimeters display values in increments. The clue is straightforward, with no wordplay or hidden meanings, just a direct reference to what the device actually measures.