Metal detecting

electronic instrument which detects the presence of metal nearby

searching outdoor waters for ferromagnetic objects using a magnet tied to a rope

thumb|right|A dowser, from an 18th-century French book about superstitions

Polish Army officer and engineer

WWII landmine detector

Detectorists is a British comedy television series first broadcast on BBC Four in October 2014. It is written and directed by Mackenzie Crook, who also stars alongside Toby Jones.