The second hand of the watch is not allowed to mark on the second

IHI love extension brand-name watches, private custom of the family heirloom. Pure gold, diamond, inlay jade, precious stones and other luxury watches. High-end celebrities must have. Creative novel, exquisite workmanship, the public price, the permanent appreciation! Tailored, can be processing, Bao Bao Bao materials can also be spot sales, welcome to inquire or order the network. Seconds are not allowed to scale? Why Tissot, Casio, Cartier quartz replica watches seconds are not allowed to scale, second hand scale solution As far as I know, the world's major Watch Producer of the rolex replica standard which are not the provisions, the reason for this, I consider the following factors: (1) second hand and minute hand is different from the minute hand and hour hand, which is "dead meshing", sub-round, cross-wheel and wheel position are relatively fixed, under normal circumstances will not dislocation or movement. The second round and sub-round between the situation is not the same, because the sub-round will be "slippery", as long as a dial needle will appear. (2) the existence of tooth space, in order to ensure normal gear meshing and smooth transmission, smooth, watch basically use the modified cycloidal teeth, gear teeth into the angle and the angle of the meshing, there must be backlash, or There will be the phenomenon of top teeth or scraping teeth. A pair of gears of the backlash is small, but into a number of pairs of gears, backlash superimposed together, it becomes obvious. Will go through a very small empty corner, the back of the pointer will be pushed, which often occurs in a certain direction after the needle, the most typical is the two-pin quartz watch, get the minute hand is always partial slow half a minute. (3) belong to the dial problem, the dial character and scale in the installation and printing on the error, can not absolutely guarantee that each part of the dial scale are concentric and uniform indexing; the most important lies in the following dial two claws, One is the positioning tolerance of the claw, one is the vertical, and then there is it in the movement may be a slight radial above the movement. (4) Quartz watches are basically second hand second hand seconds, the second hand seems to be more obvious on the bit, especially the large disk of the quartz clock, the second hand is often a part of the dial on the scale is, while the other parts are not so positive ,This is normal. In fact, mechanical watches second hand when running, but also intermittent, there are pauses. This depends on the balance wheel oscillation frequency, if it is 28,800 times / hour, then every second, the second hand will be "trembling" 8 under. (5) requirements watches (clocks) second hand fully accurate to the scale, in life does not seem to have specific application significance, only the need for sports with a stopwatch, but it requires a very fine gear teeth and a very high swing frequency before Line, and must be able to stop seconds, only when the second hand was stopped in order to accurately observe the take number. And there is such a special purpose or need time timer, and now will use digital quartz watch. Pointer counting function of the watch, in the center of the second hand when installed, is the need to locate, so that the start position of the stopwatch and return to zero after the location, can be aligned "12" character; also radio clock second hand According to the positioning requirements, they have a second-class timing accuracy requirements, in addition to the above two, the general second hand is free to install the watch. (6) the second hand of the highest position, away from the dial, so easy to observe the point of view due to the reason the error occurs. IHI watch (love extension watch) noble men watch On the uk replica watches pointer on the issue, the watch industry standard is provided, this is called the time, the minute hand coordination error. In the relevant industry standard QB / T1249-2004 inside, there is a provision as follows: "The minute hand and the dial" 12 "coincide coincidence, observe the clock and 3,6,9,12 character of the angular displacement, the value should be less than 3 degree". But just said, the minute hand, but why there is no provision for the second hand. In the early years of the planned economy, such as watches, light industrial products, the watch factory has a business representative, called "resident". Commercial and industrial point of view to see the problem is different, in general, of course, hope that the commercial product quality standards as high as possible, while the industry is hoping to "appropriate" within the scope. I have heard that the standard of time and minute hand coordination errors had sparked a heated debate between industry and commerce because the business side was in any case unaccepwatches to coincide the hour hand with the dial "12" and the minute hand allowed There is a plus or minus 6 minutes, deviation from the "12" when the error of the provisions of the provisions of the final compromise on the interpretation of the results in this statement: "the minute hand and dial" 12 "coincidence coincidence, observe the clock with 3,6,9 , 12-character angular displacement, the value should be less than 3 degrees. In fact, inside and outside the same, which is typical of the twinkling of an eye, in fact, is only a simple conversion problem. , The minute hand coordination error or easy to control, manufacturing tolerances is a small problem, mainly in the assembly by needle. Now some consumers, the quality requirements of the watch is very strict, and even raised the second hand of the bit problem, that is, seconds, minute hand also have coordination errors; require a second hand to go in a circle, the minute hand must also take a grid of precise scale, At the same time, there are seconds in the run-time, must be aligned scale or character.