Another thing to watch out for when purchasing or renting a Gauss meter is whether or not it is frequency weighted. Most meters will read the same EMF strength no matter what the frequency. This means that if the field is different than 60 Hz the meter will consider the frequency and and use it in calculating and displaying the EMF's strength. This feature is why frequency weighted meters will show a higher EMF reading than those meters typically used by electricians and engineers. An enormous amount of electricity is created at power generating stations and sent across the country through wires that carry high voltages.
All power lines radiate electromagnetic fields.
The amount of EMFs coming from a power line depends on its particular configuration. Power companies know which power line configurations are best for reducing EMFs but most don't feel the evidence supports costly changes in the way they deliver electricity. A key component of a utility's electrical distribution network depends upon numerous, small transformers mounted on power poles. A transformer looks like a small metal trash can, usually cylindrical. Many people don't realize that when they see a transformer, the power line feeding the transformer is 4000 to 13,800 volts.