A large number of off-the-shelf Maiwei 15mm plastic compass Environmentally-friendly oil precision compass Outdoor application- KFBUY.com
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A large number of off-the-shelf Maiwei 15mm plastic compass Environmentally-friendly oil precision compass Outdoor application
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US $0.08
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OVERVIEW
Compass use method: the compass must be placed horizontally and to avoid the magnetic needle disorder keep a certain distance from the magnetic object the specific method is as follows: 1 from the wire mesh > 10 meters; 2 from the high voltage line > 55 meters; 3 from the car Or aircraft > 20 meters; 4 from objects containing strong magnetic such as various magnets external magnetic speakers > 10 meters; 5 objects with weak magnetic properties such as magnetic snaps etc. > 0.5 meters. Note: 1. Use in a horizontal state to ensure accuracy as much as possible; 2. To avoid confusion of the magnetic needle please keep a certain distance from the wire mesh and magnetic objects when using it; 3. Do not use the measuring ruler to hit the object so as not to avoid Affect the measurement accuracy; 4. The surface and lens should be kept clean do not use dirty cloth hand to rub; 5. When not in use should be closed placed not close to ferromagnetic materials so as not to lose magnetic.
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