AR944M How to identify non-ferrous metals and black metals, such as gold and iron?

Описание к видео AR944M How to identify non-ferrous metals and black metals, such as gold and iron?

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Many people don't know how to use metal detectors to detect non-ferrous metals and black metals, such as gold and iron. You need to adjust to different gears to be recognized by the machine. This video details the steps.

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