Display electrical variables and processes in an easy to read digital format with a simpson meter. This digital meter, also known as a panel meter, monitors voltages, flows, speeds and more. Over time, a digital meter’s parts can wear out, so be sure to see our panel meter accessories to keep your digital counter meter up to date. For a more specific voltage reader, view our variety of highly technical process calibrators and their necessary calibrator accessories. We also offer analog panel meters if you prefer to stay with a traditional type of readout.