The fluke 1625, 2 The geo earth ground tester features USB connectivity for data storage and transfer, Along with top-tier accessories designed for efficiency and ease of use reduce testing duration and enhance features, Automatic frequency control afc, Identifies existing interference and chooses a measurement frequency to minimize providing more, Its effect 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 earth resistance, Fall-of-potential tests loop evaluations, And 4-pole soil resistivity assessments, Along with selective testing of ground rods using a single clamp for rodless grounding solutions Evaluation with dual clamps, IP56 certified for outdoor use, Durable carrying case, And USB data storage and transfer