General mechanical watches allowable error

General mechanical watches allowable error of about 30 seconds a day, the specific error according to the watch movement,luxury watches manual expressly error standard should be based on, if not explicitly identify the specific error standard should be based on national standards. The error relative quartz watch, the adjustment of the mechanical watch is particularly important.
Table Proofing time, if you begged fairly accurate let the second hand to the 12 o'clock position, pull out the crown, the second hand stationary, clockwise or counterclockwise turning the crown to adjust the position of the hour and minute, when pointer and scale time (TV or radio as a reference) the same time, push the crown back.

Luxury Watches time and date adjustment method:
1, mechanical watches in the normal position (head fully into) - This bit can manually winding to winding up (clockwise).
2, the head flick to the first, adjust the calendar and day of the week. - Up (clockwise) can adjust the calendar; adjust the Week - down (counterclockwise) rotation can be.
3, the head flick to the second paragraph, you can adjust the time, such as tuned 24 hours, calendar and day of the week also skipped a day.
4, the operation of the quartz watch tune the reference to Articles 2 and 3 of this. Tune Note:
①, the adjustment should be transferred to the calendar and the week before the current date day dial the clock more than 12 hours until the date turn to now and then adjust the correct time to avoid turning the calendar in 12:00. (Note that your watch is in)
②, adjust the calendar to avoid watch walk in 21:00 - 3:00 during the calendar turned, watch the calendar of this time the heaviest load of gear. Often turned the calendar at this time will cause deformation of the calendar plate gear, the calendar can not rotate.
(3) adjust the time of the mechanical watch minute hand should be appropriated, sold to customers the level of the watch from side to side more than 10 times, in order to reserve a certain amount of energy.
④, precise adjustment of the quartz watch should the minute hand faster than five seconds, and then transferred back to the present time should be sold to the customer to determine whether the correct time.