Di-Log-DL9062-Earth-Resistance-Tester-Di-log-DL9062-P-The-Di-Log-DL9062-is-an-Earth-Resistance-Tester-for-the-measurement-of-the-resistance-of-earthing-in-electrical-systems-&-for-measuring-ground-resistivity-P-P-Grounding-is-an-absolutely-essential-part-of-an-electrical-installation-or-system-Proper-grounding-ensures-that-the-electrical-system-is-safe-for-use-at-all-times-&-that-electricity-flows-to-earth-rather-than-through-a-nearby-conductor-such-as-a-human-P-P-This-instrumen