This simple meter is ideal for giving students a quantitative and qualitative feel for the unit of energy – the Joule – and power – the Watt. The meter measures voltage, current, and power consumption and shows energy used over time. For simplicity, the instrument automatically adjusts the display to show suitable units and an appropriate number of decimal places to deal with a very wide range of values (e.g. for energy, from 0.01 millijoules up to 300 kilojoules). The function button has four settings to select the desired quantities to be measured (energy and time, power, average power; voltage, current, and power). The meter includes a 9V mains adaptor (UK only) and can also be used with HP5328 for customers outside the UK.