Metal detector hd Android App

The description of Metal detector hd: Application metal detector hd uses built in magnetic sensor. With the use of magnetometer it measures electromagnetic field (emf) value in your surrounding. Actual value of the field is displayed as microtesla. Induction of earth 39 s magnetic field ranges from 30 to 60 microtesla ( t). If the intensity increases above 60 t it may mean that the telephone is near to ferromagnetic materials (metallic objects). You can try to find wires in the walls and metallic objects under the ground or simply prank your friends that your phone is able to detect presence of a ghost )beside presenting actual t value this tool displays the chart with the measurements of the last 15 seconds and presents minimum and maximum magnetic field strength. You can reset those readings any time. Remember that this tool uses built in magnetic field sensor. Not all phones are equipped in such a sensor..