TY-20MJ Hand-held Needle Detector it’s called portable needle detector, which is small, and easy to carry by hand. It uses principle of magnetic field, can effectively detect out the exact location of the broken needle or Fe, which is especially suitable for the thin and small goods. After detection by the big standing needle detector, use this portable one to find the exact location of the broken needle or Fe to avoid the damage to the customers and improve the quality of the products. Applicable : used to detect the broken needle, razor blade, and metal fragment, ferromagnetic metal such metal impurities in small, thin clothing, plush toys, ties, towels, scarves, socks, zips, medicine, and food and so on.