Product Details Material: plastic Weight: 340g (including packaging) Color: white, black Rod length: 165mm Quantity: 1pc Note: The compass comes with a power cord can be externally connected to the car or boat power supply used to supply the compass with its own light power problems Use method: 1, the compass will be placed or handheld, used in a horizontal state to ensure accurate readings. (Please do not place Do not place it on iron tables and other places that affect the magnetism.) 2To avoid misalignment of the pointer, please keep away from objects containing magnetism and current when using, and Some metal products (such as high-voltage wires, cell phones, stereos, screwdrivers, magnets, etc.). 3, please do not knock or hand beat the compass, so as not to affect the measurement accuracy. 4Do not leave the compass in the sun for a long time. (The temperature is too high or too low will affect the life of the compass. The life of the compass.) 5, keep the shell and mirror surface clean, do not use a dirty cloth, alcohol to wipe. 6, when not in use, please place the compass in a clean, cool place, away from magnetic substances, to avoid Avoid consuming the pointer magnetism. Car compass use instructions A: The direction of the red indicator line on the compass is aligned with the letter, that is, the direction of the car forward. Applicable models: LC760.LC550LC550BLC386LC38BMT36. Two: due to the interference of magnetic objects in the car, will make the compass deviation, the product has a correction adjustment device. The product has a correction device. Method steps are as follows. A north-south direction deviation adjustment a: Park the vehicle in the north-south direction. (The front of the car is aligned with the north) b: choose your convenient observation and relatively small interference by the car location to place the compass. c: compass placed in a position to observe the red indicator line. In the case of non-interference by the magnetic field in the car The red indicator line should be aligned with the north. In the case of interference by the magnetic field inside the car, the red line and the north will have a deviation. difference. In this case, use the adjustment piece to insert the north-south adjustment hole and rotate it so that the north and red indicator lines on the dial are aligned. B. East-west deviation adjustment a: Park the vehicle in the east-west direction, (the front of the vehicle is aligned with the east) b; When the red indicator line of the compass and the east on the dial are not aligned, insert the adjusting key blade into the east-west direction. Adjust the hole slot rotate the key piece so that the east on the dial and the red scale line can be aligned. Three: To improve the accuracy can be adjusted repeatedly according to the above method.