Geophysical Instruments and metal detectors
Petar Valchev www.georadar.ml
Bulgaria
valchevgpr@gmail.com phone: +359877532747 valchev_gpr
TD Transient Electromagnetic (TDTEM) , GPR , Earth resistivity meter
инж. Петър Вълчев
гр Плевен
Ground penetrating radar GPR https://sites.google.com/site/vgeoradar/
Георадари https://sites.google.com/site/vgeoradar/
Metal detectors https://sites.google.com/site/vdetectors/
Металотърсачи https://sites.google.com/site/vdetectors/
Earth resistivity meters https://sites.google.com/site/resmeter/
Мулти електродни омметри https://sites.google.com/site/resmeter/