Panel Meters are an essential component of any industry where monitoring and/or control of equipment is taking place. These are instruments that display a signal’s analog or digital value, depending on the product’s specifications. Modern panel meters have advanced capabilities such as alarms, transferring data via different mediums, etc. The basic principle of operation is as follows: a sample of voltage or current is taking from the signal and visual representation is created. Voltage measurements are usually taken across the load while current measurements are in series configuration. Supplementary devices are also used for high-magnitude measurements such as current/voltage transformer in high-power systems.