OKM Germany is one of the leading manufacturers ofprofessional metal detectors and geophysical instrumentsworldwide and their unique OKM technology is one of the mostinnovative technologies nowadays, including moderndetection features in all of their detectors. In the last 2decades OKM is setting new standards in visual depth detection.Using combined metal detecting methods it is possible to reachhigher depths than a normal metal detector can reach and locate notonly metals like gold, silver or iron but also cavities liketunnels, caves and hidden chambers under the surface.OKM metal detectors has been successfully used in all differentkind of fields. Not only professional treasure hunters and hobbygold seekers are using OKM detectors, also professional geophysicalsurveys, geological researches and Industrial explorations has beendone with professional OKM equipment.