Πρακτικός σπασμένος βιομηχανικός ανιχνευτής μετάλλων βελόνων με τη δόνηση και τον υγιή συναγερμό

Handy Broken Needle Industrial Metal Detector With Vibration And Sound Alarm TY-28MJ Handy type broken needle detector, it is called portable needle detector,which is small size 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