Mechanical watch purchase guide How to buy a good mechanical watch? Watch is a precision timing instrument, the higher the price, the use of time is also long. Watch quality is good or bad, the user is very concerned about the problem. Therefore, people always strive for excellence in the purchase of watches, good and good selection. But how to choose a quality watch? In general, it is not scientific to judge the quality of a watch simply by listening to the size of the watch when it is traveling. Because the quality of the watch is good or bad, mainly to see the accuracy of the actual travel time. Watch machine issued when the sound is balanced, clear and no noise, only that the watch does not fault, does not explain the quality of the watch is good and bad as the only way to pick the watch. You must also choose from the following aspects: First, check the appearance of watch parts Watch appearance from the shell, table mirror, dial and time-sharing second hand and other aspects of inspection. The case should be no trachoma and obvious scratches, edges and corners symmetry; back cover and the upper shell should be closely linked at the juncture; the two watch ring each with the same distance from the case, the earrings should be installed in the tail hole position Center not partial, the depth of the hole appropriate, so that the ring is not easy to fall off; table mirror should be free of defects and scratches, transparent and bright; three-pin installation is correct, the needle and needle, watch mirror and dial should have the correct safety clearance; Pointer coating finish, no marks, dial lines or luminous points complete; between the head and the case about 0.1-0.3mm gap. Second, check the watch's sensitivity The sensitivity of the watch refers to the flexibility of its balance pendulum. The inspection method is: (1) Will not be on the clockwork has stopped walking watch gently shake it, with the power of shaking to observe the movement of the second hand: If the second hand to stop walking in a very short period of time, then watch this watch full of hair After all the articles can be finished (ie, the clockwork without torque), high sensitivity; if the second hand for a long time to continue to move, then watch the clock can not be fully finished after all (that is, the spring is also stored torque), the sensitivity is not high Or table machine is faulty. (2) Will not be on the winding stop watch, slowly turn the head to observe the second hand start situation: the rotation of the winding less, the second start of the watch the higher the sensitivity of the table; the other hand, the low sensitivity Or the watch machine has other troubles. However, we must pay attention to Swift Watch swinging gossamer due to the greater stiffness than the traditional frequency (18,000 times / hour) watch a little more winding machine can swing. Sensitivity of the watch, on the foot of a winding longer after moving around. Third, check the watch pointer spacing and location Needle and table mirror, between the dial and between the three need to maintain a certain distance, or scratch each other and affect the normal operation of the table. Inspection can be observed by dial needle. The hour and minute hand position and mutual cooperation is normal inspection method is: the minute hand and the hour hand dial 3 o'clock, 9 o'clock, observe whether the two needles at right angles; dial to 6 o'clock, two needles into a straight line; dial 12 o'clock, Whether the two coincide needle. Fourth, check the watch above the body Normal watch winding should be relaxed. Turn the head on the article, the first feel loose, gradually more and more tight, when you can not continue to turn the head forward, that the clockwork has been completely full and the body work properly. If you turn the handle on the article, the occurrence of "chattering abnormal sound, or produce top tooth slippage and other phenomena, then the body is a failure. Fifth, check the watch dial needle agencies The watch should be flexible, reliable and the pointer is rotated evenly. Inspection should focus on checking the sub - round friction with the center axle with the tightness. In the allocation of needle, if there is no partial loose or tight feeling, that the normal friction wheel and the amount of fuel, on the contrary, needle machine fault. The above methods to buy a new watch, check the quality of the old watch or repair table can also refer to, but according to the useful life of the watch, as appropriate, reduce the standard.