Every electronics engineer and technician should have a digital multimeter (DMM). Here are some things to consider when purchasing a DMM:
The most basic piece of test equipment in the engineer's or technician's toolbox is the digital multimeter, or DMM. With a DMM, you can make voltage, current, and resistance measurements. Today's DMMs, though, can make other measurements, such as continuity and capacitance, and have advanced features that can help you make the measurements you need quickly and easily.