The Fluke 1625-2 offers you simpler, faster earth ground tests than ever before. The 1625-2 offers internal memory storage up to 1500 records, accessible via USB port for rapid data transfer and viewing of results. This earth ground tester also gives you world-class accessories that take the tedium out of earth ground testing. New wire reels speed up setup and tear down time as much as 50%. Heavy duty stakes can be hammered into dry, hard soil. And new color-coded wires make setup simple and help eliminate mistakes.The Fluke 1625-2 improves your earth ground testing process with:Automatic Frequency Control (AFC) - identifies existing interference and chooses a measurement frequency to minimize its effect, providing more accurate earth ground valueR* measurement - calculates earth ground impedance at 55 Hz to more accurately reflect the earth ground resistance that a fault-to earth ground would seeAdjustable limits - for quicker testing3- and 4-pole Fall-of-Potential, earth resistance loop testing4-pole Soil Resistivity testingSelective earth ground rod testing using 1 clampStakeless earth ground rod testing using 2 clampsIP56 rated for outdoor useRugged carrying caseUSB data storage and transfer