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DETUCK Pocket Compass Manual Notes: 1. Use the compass in a horizontal state, in order to ensure the accuracy of the pointer; 2. To avoid confusion occurs pointer, please maintain a certain distance from the barbed wire, as well as objects containing magnetic; 3. Do not use a compass to beat the object, so as not to affect the measurement accuracy; 4. Keep The disk and the lens clean, do not use a dirty cloth, hand to wipe; 5. Close it when not use, do not place it near ferromagnetic materials, in order to avoid loss of magnetism.