an ohmmeter-type instrument by means of which the value of a resistance can be measured and directly indicated by the position of a pointer on a scale
a test instrument that utilizes DC voltage to measure Resistance
A measuring device used to determine the resistivity of soils as well as a grounding system's resistance to earth.
A megger (or sometimes meggar) is often a colloquial term for a circuit tester which puts a very high voltage at a very low current across two conductors to make sure that they are properly insulated. The name is short for megohm-meter.