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| A very inexpensive AC EMF meter that has a ten LED array readout, from 1.5 mG to 30 mG, and a rotatable inductor. I extrapolated the frequency response to level off after 1,200 hz, which is good for low frequency studies. For the price, these make great stationary meters, just fix a rubber band around it to hold the "On" button down, and stand it on its edge. As a handheld meter, however, I'd recommend spending a little more to get a more accurate meter, with a higher resolution. |