Pen-shaped simple grounding device for simple measurements that does not require a grounding rod. A simple measuring device specializing in simple ground resistance measurement (2-pole method) Earth resistance meter measurement range (auto range): 200.0/2000Ω Voltmeter measurement range/accuracy: AC: 5.0 ~ 300.0V (45 ~ 65Hz) (true effective value) ±1%rdg ± 4dgt | DC: ±5.0 ~ ±300.0V ±1%rdg ± 8dgt (AC/DC automatic discrimination) 200/2000Ω 2 range auto