subject: The knowledge can help to choose mechanical watch [print this page] (1)steel and semi-steel (1)steel and semi-steel
Mechanical watches are steel and semi-steel sheet of the points. The so-called all-steel, semi-steel watch case are that the material, steel sheet is the case and table covers are made of stainless steel, semi-steel table their case is chrome plated brass, the back cover is stainless steel, Both the quality movement has nothing to do with. Replica Watches
(2) the number of drilling table
Most dial engraved with the table of the drill a few (such as 21ZUAN) and the frequency number (eg 21600), the amount of drilling is a measure of the number of table one of the hallmarks of Quality. In accordance with the table function, general mechanical watches demand a 17 --- 19 drill, automatic table require 25 --- 30 drill, and drill a few too many little effect on machine performance table, the general decorative effect only. However, the higher the frequency of the watch the better, its frequency is the number of swings per hour ferry, frequency 18,000 times less for the low-frequency table (slow swing), 21 600 times more than for the high-frequency table (table Quickly) , the higher the frequency, the more accurate travel time.
(3) varieties of mechanical watches
Variety of ordinary mechanical watch list, calendar and automatic table and automatic mechanical calendar table, are based on the increase in mechanical watches a calendar device or automatic devices. And have showed only a single calendar date; also showed two-week calendar or calendar calendar calendar and all.
Automatic table is driven by arm movement form of Automatic hammer, so that activities and tight winding automatic device to promote walking. Automatic and semi automatic table also divided, automatic movement in any direction is a table can be winding, semi-automatic only do one exercise to the winding direction. The latter has now been eliminated, not production, so the new table are fully automatic table automatically.
