Watch authentic identification: check the appearance of the watch parts, check the watch's sensitivity, check the watch pointer spacing and location, check the watch on the body, check watch dial needle agencies.
1. Check the appearance of watch parts: the appearance of the watch 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 with the case of the same distance, the hole should be installed earrings in the foot of the case foot position Center not partial, the depth of the hole appropriate, so that the ring is not easy to fall off; table mirror should be no 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; dial and Pointer coating finish, no marks, dial lines or luminous points complete; between the head and the case about 0.1-0.3mm gap.
2. Check the watch's sensitivity: the sensitivity of the watch is its balance of pendulum flexibility. The inspection method is:
1. Have not been on the clock 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 on the clockwork After all can finish (that is, the clockwork no torque), high sensitivity; if the second hand for a long time to continue to move, then watch this watch can not all finish after winding (that is, spring also save torque), the sensitivity is not high or Table machine is faulty.
2. Will not be on the clock to stop walking around the watch, slowly turn the head to observe the second hand start situation: the rotation of the less the second start of the second hand, the higher the sensitivity of the table; the other hand, the sensitivity is low or Table machine has other problems. 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.
3. Check the watch pointer spacing and location: hands and table mirror, between the dial and the three need to maintain a certain distance between, 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: dial the minute hand and the hour hand to 3 o'clock, 9 o'clock, observe whether the two needles are right angle; dial 6 o'clock, Whether the two coincide needle.
4. Check the watch on the body: the normal watch on the article 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.
5. check the watch dial needle mechanism: when the watch dial needle should be flexible, reliable and pointer rotation 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.
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