The answer to 'types of electrical meter' is that there are several common types of electrical meters used in homes and businesses. The most common are digital multimeters, which can measure voltage, current, resistance, and other electrical properties. Clamp-on ammeters are used to measure current without disconnecting wires. Voltage testers are simple devices that check for the presence of voltage in outlets and wiring. Specialty meters like power quality analyzers and circuit testers are used by electricians for more advanced diagnostics.
When selecting an electrical meter, it's important to choose one that is rated for the voltages and currents you'll be measuring, and to follow proper safety procedures when using any electrical testing equipment.