EMF detectors; GPS apparatus; GPS receivers; GPS navigation devices; GPS tracking and location devices; Geiger counters; gyroscopes; sensors for determining velocity; sensors for determining position; sensors for determining temperature; sensors for measuring instruments; sensors for determining acceleration; acceleration sensors; accelerometers; inertial navigational apparatus; navigation apparatus; electric navigation instruments; electric navigational instruments; inertial navigational instruments; electronic navigational apparatus and instruments; electronic navigational, tracking and positioning apparatus and instruments; electronic navigation and geolocalization apparatus and instruments; electronic navigation and geolocation apparatus and instruments; electronic navigation apparatus and instruments; electronic navigational and positioning apparatus and instruments; electronic navigation instruments; electronic navigational instruments; navigational instruments; satellite navigation devices; satellite navigation systems; satellite navigational apparatus; satellite navigational instruments; scintillation counters; apparatus for measuring electricity; cameras; data communication hardware; ohmmeters; magnetic compasses for surveying; rods [surveying instruments]; surveying apparatus and instruments; sensors, detectors and monitoring instruments; measuring apparatus and instruments; measuring apparatus, devices and instruments; magnetometers; gamma radiation detectors; instruments for detecting radiation; radiation detecting instruments; radiation detection instruments; radiation detectors; radiation measuring apparatus; radiation measuring instruments; azimuth instruments; scientific, measuring, signaling and checking apparatus and instruments; apparatus for detecting radiation; radiation detecting apparatus; radiation detection apparatus.