The 11 Best Cheap Metal Detectors of 2021 - Kellyco
2021-1-1 · Ferrous: Metals that contain iron.Non-ferrous metals are metals that are not magnetic, like brass, gold, silver, nickel, tin, and lead.. Frequency: Frequencies vary on cheap metal detectors and the different frequencies are used for different types of detecting.The frequencies are measured in Kilohertz and measure the number of magnetic fields sent to the ground.
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