It is a little complex, but once experience is attained, it is a good / useful tool. That was very handy during my last usage. The tool has a back lighting on / off push button for the display.
There is a LCD display and tones, with a myriad of symbols that mean success, when properly decoded. The Bosch GMS 120 Wall Scanner has a red / green illuminated ring around a cylindrical pencil-marking hole. The wall scanner has a live wire detection mode to locate wires carrying 110-220 VAC voltage. In metal detection mode the wall scanner locates: nails rebar or screws.
In stud detection mode, the Bosch GMS 120 Wall Scanner detects: wood studs magnetic metal and non-magnetic metal. When the sensor measurements match, the center of the stud has been located. This is a center finder dielectric constant capacitor detector, using a pair of sensors. The usage is simple, with a linear LED display.Ī Bosch GMS 120 Wall Scanner was selected and purchased to permit detection of metal studs. The Zircon Stud Sensor is an edge finder dielectric constant capacitor detector, using a single sensor. The Zircon electronic stud finder does not locate those new-fangled metal studs, instead looking for REAL studs, made from wood. My decades-old Zircon Stud Sensor still works fine, but the homes I work on now have metal studs.
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