Equipment, apparatus and instruments for searching, locating and testing metallic and non-metallic materials, inhomogeneous areas in objects in solid or liquid materials and in the ground, electric or magnetic fields, oscillatory formations of gases and sound waves, namely, locators and testers for metallic and non-metallic materials, inhomogeneous areas in objects in solid or liquid materials and in the ground, electric or magnetic fields, oscillatory formations of gas and sound waves; metal detectors, electronic equipment for mine detection and mine sweeping apparatus, namely, mine detectors and mine sweepers, pipe and cable detecting apparatus, namely, pipe and cable locators, avalanche victim locating apparatus, namely, avalanche transceivers and avalanche transceiver beacons, search apparatus for locating magnetic and electromagnetic targets and marks, namely, locators for magnetic and electromagnetic targets and marks, gas detectors for detecting the presence of gas, geophysical apparatus and material testing apparatus, namely, materials testers for testing of quality, composition and defects, electric stethoscopes for the technical and safety-related areas not for medical purposes; software and computer programmes for the evaluation, incorporation, storage, transfer and visualisation of measured data, incidents and information of actively and passively operated electronical equipment, apparatus and instruments used for searching, locating and testing metallic and non-metallic materials, inhomogeneous areas in objects in solid or liquid materials and in the ground, electric or magnetic fields, oscillatory formations of gases and sound waves, metal detectors, mine sweeping apparatus, pipe and cable detecting apparatus, avalanche victim locating apparatus, search apparatus for locating magnetic and electromagnetic targets and marks, gas detectors, geophysical apparatus and material testing apparatus, electric stethoscopes for technical and safety-related areas not for medical purposes