Extech-EX510-Digital-Multimeter-DMM-6000-counts-UP67-EXTECH-EX510-P-The-Extech-EX510-industrial-digital-multimeter-is-waterproof-to-IP67-&-very-robust-due-to-the-protection-offerred-by-its-moulded-soft-rubber-housing-A-fall-from-two-metres-doesn-t-bother-this-multimeter-one-bit-The-device-is-ideal-for-use-outdoors-&-under-difficult-conditions-Standard-measurements-are-AC-DC-current-&-voltage-plus-resistance-frequency-diode-test-audible-continuity-&-duty-cycle-with-automatic-r