Promising setup and tear-down time savings in the realm of 50% over comparable approaches, the 1623-2 and 1625-2 earth ground testers provide features and accessories that speed verification of reliable earth connections. Accessories include heavy-duty stakes for hammering into hard ground, color-coded wires to reduce errors, and a rugged carrying case. The 1625-2 model provides automatic frequency control (AFC), which identifies existing interference and chooses a measurement frequency. Other features include R measurement, which calculates earth ground impedance at 55 Hz to more accurately reflect the resistance that a fault-to-earth ground would experience. For more information visit: http://en-us.fluke.com/products/earth-ground/?trck=egt#fbid=WHP6x_R6_2u&utm_campaign=egt&utm_source=PRN&utm_medium=release.