@futurebird There was a massive scam in 2010ish involving a repackaged set of dowsing rods claiming to be bomb detection devices: https://en.wikipedia.org/wiki/ADE_651
Even after the scam was revealed, some organisations kept using it 
@futurebird There was a massive scam in 2010ish involving a repackaged set of dowsing rods claiming to be bomb detection devices: https://en.wikipedia.org/wiki/ADE_651
Even after the scam was revealed, some organisations kept using it 