April 19, 2006

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Early Metal Detector (Jul, 1935)

Filed under: Origins — @ 6:53 am
Source: Modern Mechanix ( More articles from this issue )
Issue: Jul, 1935
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Magnets Detect Smuggled Weapons
SMUGGLING of weapons into prisons is eliminated by the new secret weapon detector. As soon as a person with a gun passes between twin electric magnets mounted on stands, a light and buzzer issue warnings.

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