The Discriminating Metal Detector - for the discriminating metal detector - Tech Digest
If you live in or near the odd fringe area of society where it's acceptable behaviour to spend six hours pacing up and down a beach in the hope of finding a 5p coin someone dropped yesterday and couldn't be bothered bending down to pick up - THIS IS FOR YOU. Only joking - metal detectors are awesome. The idea of spending a whole day methodically covering a surface area the size of three football pitches in the hope of finding some old Roman coins, a bit of a crashed Spitfire or just a rusted piece...
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