Compass use
Always compass horizontally, as well as to avoid needle disorder occurs, to maintain a certain distance from the object containing magnetic, specifically as follows:
1, from the barbed wire> 10 m;
2, away from the high-voltage lines> 55 m;
3, > 20 meters away from the car or aircraft;
4, from the object containing magnetic, such as a variety of magnets, external magnetic speaker> 10 m;
5, from the weaker magnetic objects such as magnetic snap, etc.> 0.5 m.
Precautions
1. Use in a horizontal state, to try to ensure that accurate;
2. To avoid needle disorder occurs when using Keep a safe distance and barbed wire, as well as objects containing magnetic;
3. unavailable foot beat mapping objects, so as not to affect the measurement accuracy;
The disk and the lens to keep clean, do not use a dirty cloth, hand to wipe;
5. closed when not in use, place not near the ferromagnetic material, in order to avoid loss of magnetism.