Highlights: * No batteries or calibration required * Contains powerful neodymium magnets * Remove magnetic shield and slide stud magnet across wall unit until it attracts a nail or screw head in stud * Replace magnetic shield after use to prevent t
Highlights: * No batteries or calibration required * Contains powerful neodymium magnets * Remove magnetic shield and slide stud magnet across wall unit until it attracts a nail or screw head in stud * Replace magnetic shield after use to prevent t
