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Handheld portable type needle detector device, check the iron, using the principle of magnetic field, can accurately and effectively detect broken the specific location of needle and iron items. It is extremely suitable for thin and small objects detection. And is applicable to large pin detection device detection, the handheld needle detector device can help you small range accurately find the needle or ferromagnetic metal indeed but location to avoid metal impurities bring harm to consumers or machinery, improve the quality of enterprise products.