About 10 years ago we tested this thing at a fair in Lovech. A 2-meter deep pit was dug, covered with thick wooden slats. A 15-liter cheese tin was placed at the bottom - https://www.didcommerce.bg/product/%...5%D0%BA%D0%B3/
then we tried to test the discrimination of this thing with several objects made of aluminum, copper and iron . After about a minute, the Turk-manufacturer of this thing said that the battery of the thing was exhausted...it is better to buy a cheese tin for an appetizer, sit down and drink homemade quince brandy and talk about signs of buried treasure on the rocks , descriptions of buried cauldrons with gold and other treasures with the owner of this thing - until the cheese runs out. You will have a good time, instead of spending money for gasoline and wasting your time working with this thing.

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