Electromagnetic Field Meters are devices used to measure the strength and frequency of electromagnetic fields (EMF) in the environment. These fields are produced by various sources, including power lines, cell phones, and wireless networks. EMF meters help assess exposure levels, which can be important for health and safety evaluations. These meters typically display readings in units like milligauss (mG) or volts per meter (V/m). Users can find them useful in both residential and industrial settings to ensure compliance with safety standards and to identify potential sources of electromagnetic radiation.