Gauss Meters
Invisible electromagnetic radiation surrounds us each day, emanating from diverse sources such as power lines, home wiring, computers, televisions, microwave ovens, photocopy machines, and cell phones.
While undetectable to the eye, scientists have proposed that electromagnetic radiation may pose serious health effects, ranging from childhood leukemia to brain tumors.
As scientists continue to unravel the precise health dangers of electromagnetic radiation, it makes good sense to avoid these potentially dangerous frequencies as much as possible. A gauss meter is a useful tool you can use to measure electromagnetic radiation in your home and work environments.
Using the gauss meter at varied locations, you can easily detect electromagnetic radiation “hot spots” where exposure to these ominous frequencies is the greatest. Armed with this crucial information, you can then avoid these areas, re-arranging furniture or electronic devices as needed in order to avoid unnecessary exposure to electromagnetic radiation.
Source:
http://www.lifeextension.com/magazine/2007/8/report_cellphone_radiation/Page-01
Electric Field Meters
Electric fields make up the other half of the "electro"magnetic fields from power lines, wiring, lights, appliances, etc. Electric fields may also have health effects, but have been studied far less than the other two kinds of EMF. Anecdotally, electric fields are often involved when people knowingly feel discomfort or “symptoms” from electrical sources. They are measured in units of volts on the skin (V), or volts per meter (V/M).
For infomation on which meter to choose, see:
http://www.emfcenter.com/metrsale.htm
Radio Frequncy Meters
Radio frequency or “RF” refers to high frequency fields and microwaves emitted by microwave ovens, cell towers, cell phones, cordless phones, TV and radio broadcast towers, Wi-Fi, wireless computer devices, and other electronics. The electric and magnetic parts of RF fields are not separated, so you only need one meter to detect the RF field. RF is usually measured in units of microwatts per centimeter squared(μW/cm²).
For infomation on which meter to choose, see: