щуп Владимирова(deep sectionalized mine prodder, intended for probing undisturbed soil to a depth of up to 2 meters and loosened soil to more than 3.5 meters)
щуп Владимирова(deep sectionalized mine prodder, intended for probing undisturbed soil to a depth of up to 2 meters and loosened soil to more than 3.5 meters)