Petar Valchev www.georadar.ga

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/

https://www.youtube.com/user/valchevgpr/videos