대지저항측정기 Ground Resistance Tester EM4055 (MEGABRAS / 미국) = 접지저항 측정 = 대지비 (Wenner's method) = High spurious voltage rejection = Spurious voltage measurement = 0,01Ω resolution = Up to 20KΩ resistance range = Auto-range = Alphanumerical display = Heavy duty equipment = Automatic interference detection = Rechargeable battery = Built-in printer (optional) = Direct reading of ground resistivity = Up t..