... Read LCD Screen 3-in-1 Stud, Voltage and Metal Detector with Easy-to-Read LCD ... wood up to 18mm Auto calibration metal, voltage, stud detection Audio and visual indication Operated ... injection molding, metal stamping, manufacture and assemblyTesting: PCBA in-circuit testing (agilent), PCBA function testing (Agilent), AOI ( ... contact us. 3-in-1 Stud, Voltage and Metal Detector, custom circuit board