Chauvin-Arnoux-CA-6471-Earth-&-Resistivity-Tester-CAT-IV-50V-Chauvin-Arnoux-P01126505-The-Chauvin-Arnoux-CA-6471-earth-&-resistivity-tester-is-a-portable-&-tough-unit-for-on-site-use-measuring-the-earth-resistance-or-specific-earth-resistance-of-2-or-4-conductors-This-instrument-supports-a-number-of-time-saving-measurement-methods-which-do-not-require-additional-earth-points-or-the-disconnection-of-circuits-Tests-can-be-carried-out-manually-or-automatically-&-results-are-logged-to-