Walk-through metal detectors (aka the ones which you often see at public places like airports) seem to be pretty simple machines. You walk through them, they detect anything metal on you (or don't), ...
The Family Handyman on MSN
We found the 6 best metal detectors after testing nearly a dozen models
We spent weeks testing the best metal detectors on the market. Here are our top six picks. Purchasing one of the best metal ...
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