Watch knowledge | the nine professional terms, the old driver may not all understand

The more you know about your watch, the more you feel that the world of watch is profound and profound. Even the old master who has been immersed in it for years will not necessarily dare to say that all your watch knowledge comes in handy. That for the little white to get started, see some of the watch's introduction, in addition to the basic parameters, for some terms may not know what to do. Today, we have selected a few terms for everyone to science. 1 Two places Rolex Greenwich II series Two places When the two watches is a watch that can display two time zones , for the pointer watch, there are two adjustable hour hand, an hour hand indicates the time (first time zone), and the other hour hand indicates the time of the second time zone . 2 World time Jaeger-Le Geographers Master Series World time World watch is a time zone watch that can show time in more than 24 cities and regions . Most Worldwatch watches have a dial marked with time zones around the world, each of which is represented by one of the famous cities, based on GMT ( Greenwich Mean Time ) and second time zone by turning this Dial to read, GMT generally refers to the world. 3 Chasing the needle time Glashutte original chasing chronograph Chopper is a chronograph function. Its characteristic is that there are two seconds hand , will overlap with the operation, this chronograph is characterized by more than a piece of timekeeping button. While in chronograph mode, pressing the Segment Timing button stops one of the stitches while the other stitches are inherited, so that two simultaneous, but not simultaneous ends can be counted. Press the segmented timer again, the stopped second hand will catch up with the previous second hand. 4 Long power Lange Lange 31 31 days long power The power of the mechanical watch work stored in the internal winding of the clockwork, the mechanical watch is full of the clockwork, the internal storage of power can keep the watch running for 48 hours or so. Watches with a power reserve greater than or equal to 72 hours are called long-power watches. 5 Ziming Vacheron Constantin loft artisan symphony big self-waking 1860 watch Since the Ming table, refers to those who do not have artificial control can automatically clocks, which can be divided into large self-timer, small self-timer and a special watch. A specific schedule means that a ring will sound when the set time has arrived or started. The size of the self-timer can be in the clock to run until the "whole hour" and "the whole carved" when the bell automatically rings, but the small self-policing in the automatic carved no longer repeat the whole hourly timekeeping. In addition to self-tingmei table features three questions, the biggest difference is that it can automatically timekeeping, because it is more than a set of time-lapse clockwork, but also choose to quote timekeeping or punctuality or mute. 6 Sesame chain Sesame chain is a relatively rare mechanism in mechanical watches constant power system, its purpose is to make the energy output of the clockwork more stable. Principle : The use of Archimedes found the lever fulcrum principle. When the mainspring is fully wound and fully operational, the sesame seed will be pulled by the lever on the smaller circumference, ie the pagoda wheel. When the mainspring is weakened, the sesame seed chain will be pulled over the larger circumference of the pagoda wheel . Sesame chain drive system will be between the main winding barrel and its pagoda wheel, with a slender, bicycle chain such as the chain known as sesame chains connected to each other. In many high-level tables, we can still see the presence of sesame seeds chain, but fundamentally, its purpose has changed in order to show the brand watchmaking techniques to improve the mechanical watch complexity, challenge the bottleneck of mechanical technology innovation. 7 PVD plating PVD is an abbreviation of English Physical Vapor Deposition, the Chinese meaning is "physical vapor deposition" , refers to the physical conditions of the vacuum deposition method, the material deposited on the workpiece by plating on the membrane preparation technology. PVD schematic Principle: Under vacuum conditions, the use of low-voltage, high current arc discharge technology, the use of gas discharge target evaporation and evaporation of substances and gases are ionized, the use of electric field acceleration, the material being evaporated and its reaction products Deposited on the workpiece. PVD coating film plating process, with high hardness, high wear resistance (low coefficient of friction), good corrosion resistance and chemical stability and other characteristics of the longer life of the film; the same time, the film can significantly Improve the appearance of the workpiece decorative performance. PVD coating can make the color of the film has a deep golden yellow, light yellow, brown, bronze, gray, black, gray black, colorful and so on. By controlling the relevant parameters in the coating process, the color of the coating can be controlled; after the coating is finished, the color of the coating can be measured by the relevant instrument to determine whether the coating color meets the requirement.