Chauvin-Arnoux-CA-6412-Digital-Current-Clamp-Meter-CAT-III-150-V-Chauvin-Arnoux-P01-1220-12-The-CA-6412-earth-clamp-from-Chauvin-Arnoux-is-ideal-for-quick-&-reliable-earthing-checks-By-simply-clamping-the-earthing-cable-you-are-able-to-measure-the-potential-leak-current-which-is-discharging-to-earth-This-is-an-absolutely-safe-test-the-circuit-does-not-need-to-be-disconnected-The-instrument-will-also-measure-the-resistance-of-a-system-of-conductors-which-forms-a-loop-Chauvin-Arnoux-P01-1