| 摘要 |
PURPOSE: A portable magnetic field detector for measuring a magnetic field distance is provided to determine whether a specific object is a magnet or not and easily measure a magnetic field part of magnet and a distance which a magnetic field affects. CONSTITUTION: A portable magnetic field detector for measuring a magnetic field distance includes a light (20), a display lamp (10), a detecting sensor, a buzzer (30), a switch (40), and a ruler which slides a slide groove which is formed in the lower part of the magnetic field detector (1) and comprises a normal direction scale part and a reverse direction scale part in which left and right are displayed on the contrary.
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