1625 Features 3- and 4-pole earth ground measurement 4-Pole soil resistivity testing 2-pole resistance measurement AC 2- and 4-pole resistance measurement DC Selective testing, no disconnection of ground conductor (1 clamp) Stakeless testing, quick ground loop testing (2 clamps) Earth impedance measurement at 55 Hz Automatic frequency control (AFC) (94, 105, 111, 128 Hz) Measuring voltage switchable 20/48V Programmable limits, settings Continuity with buzzer 1625-KIT Accessories 2 - Test leads 4 - Earth ground stakes 3 - Cable reels with wire (2-25 m, 1-50 m) 2 - Clamps (one inducing, one sensing) 6 - AA LR6 Batteries 1 - Users manual 1 - Rugged carrying case