A multi meter is a handy tool that is used to measure electricity, just like as a ruler is used to estimate distance, a stopwatch to assess time or a scale to measure weight. The HTC digital multi meter can be used to measure voltages, currents and resistances and is equipped with a knob on the front that allows the operator to select what he wants to measure. The digital multimeter is also equipped with a diode check function. When working with a diode, it can get quite tricky to understand as to which way the current goes through within it and whether the diode is working properly or not. The diode check feature can be quite handy in such instances 3½ Digital Multi meter. No Power-OFF under natural operation. Full protection in all ranges. NCV Test. Diode check . Transistors testing. Can be used to measure various electrical units for measuring voltages, resistances and electric currents, typically over several ranges of values. The HTC DM-86 Range 200mV - 750 V Digital Multi meter equipped with transistor checking and diode checking ability, is indeed unmatched in comparison with its counterparts. Buy it online on Industrybuying at the best price.