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Message: <blockquote data-quote="henry2011" data-source="post: 10098498" data-attributes="member: 350294"><p>1.check Check the watch appearance parts. Watch from the shell exterior,table mirror,dial and hours of second hand  and so on examination.Trachoma and obvious case should be no scratches,  angular symmetry;back cover and at the rotary joint on the shell should  be tightly;two watch ring the same distance with the case, the  installation should be in the ear hole Juan case the location of the  rear foot center or favor,the appropriate depth of the hole,so easy to  fall off the watch ring; watch mirror should be no defects and  scratches,transparent light;three-pin is installed correctly,the needle  with the needle,the watch should exist between the mirror and dial the  correct security clearance;dial and pointer coating finish is good,there  is no scar,dial the full scale lines or luminous points;head with the  case between the gap of about 0.1-0.3mm. 2.Check the sensitivity of the watch The sensitivity of the watch’s balance wheel is that it automatically swing flexibility.Inspection methods are: (1)Make the watch has stopped moving gently shake with the power to  observe the second hand move:if the second hand stopped moving in a very  short period of time,then only watch the full-fat after the article can  be completed all,high sensitivity; if the second hand for a long time  to move,then only watch on the full winding can not be completed all,the  sensitivity is not high or watch machine is faulty. (2)Make the watch had never with awinding stopped walking and slowly  turning his head to observe the second hand start: The rotation of the  bar to less description of the second hand start the sooner the higher  the sensitivity of the table; otherwise low sensitivity or table machine  has other faults. However, soon put the watch to note the stiffness of  the springs larger than the traditional frequency (18,000 cycles / hour)  on the table little more than winding confidential to swing. High  sensitivity watch, on foot, after winding a long time continued walking.</p></blockquote><p></p>

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