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Chronograph watches - Categorising chronographs Perfect Clone Wholesale Center - Cheap Bell & Ross Watches Replica For Sale
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Chronograph watches – Categorising chronographs Perfect Clone Wholesale Center

Typologie des chronographes

The chronograph. It’s a linguistic convention to talk about this feature in the singular, but in fact the chronograph is plural in nature. There are around twenty different types, which all have specific displays, controls, functions and abilities. As we often find in the watchmaking world, a complication is in fact a little world of its own, with its own codes and conventions.

A chronograph is defined as a watch that is capable of measuring one or more finite time intervals, and then being reset to zero. The classic version is simply called a chronograph. It has three distinct operations – stop, start and zero reset – which are triggered by two pushers. The first pusher starts and stops the timing operation, and can start and stop repeatedly. Once finished, the counter is reset to zero with the second pusher, and the sequence can begin again. While timing is ongoing, the zero reset button doesn’t work. There monopusher variant can implement just one possible sequence: start – stop – zero. And it can’t be stopped and restarted.

One of the most popular variations of the chronograph is the flyback. Thanks to a slightly different mechanical construction, it is not necessary to stop the timer before zeroing it and launching a different timing operation. Times can therefore be measured back to back, simply by pressing the second pusher. This complication can be combined with the classic two-pusher chronograph as well as with a split-seconds function.

Typologie des chronographes

Breguet Type XXI 3817, flyback with central chronograph seconds and minutes © David Chokron/WorldTempus

In order to be able to time more than one event simultaneously, the split-seconds chronograph has two chronograph seconds hands and three pushers. The third pusher (which is usually in the crown, and thus the second as you look at the watch) stops one of the two running seconds hands to indicate the time of the first of the two timed events. With a further press, this hand catches up with the first (which is where the French term rattrapante comes from). As the function affects only the running seconds hand, split-seconds functions are incapable of measuring time differences greater than 59 seconds, with the notable exception of the Double Split by A. Lange & Söhne. But there is an alternative solution, if what you want to do is time two competitors separately. The Twin Chrono by Louis Vuitton, which is in a category of its own, comprises several discrete movements which function independently within the same case. When triggered, the times of two separate competitors can be measured independently, including hours and minutes, and the difference between them can also be displayed.

Typologie des chronographes

Louis Vuitton Twin Chrono, with two separate chronograph registers but no split seconds © David Chokron/Worldtempus

In addition to these functions, chronographs offer several display variations. They might have one or two counters. The first always shows elapsed minutes, and the second optional subdial records the hours. The chronograph second hands sits in the centre of the dial, which is why the standard second hand is generally transferred to a subdial. However, some movements have their second hand in the centre, on the same spindle as the chronograph running seconds hand. Others have two chronograph hands – for seconds and minutes – in the centre.

All of these displays can be combined with a jumping seconds hand. This complication features a small seconds counter subdivided into fractions of a second, depending on the frequency of the movement. A 4 Hz calibre, for instance, would display eighths of a second. You can find both jumping seconds chronographs and even flyback chronographs with jumping seconds.

Typologie des chronographes

Jaeger-LeCoultre Duomètre à Chronographe, with jumping seconds © Jaeger-LeCoultre

The last variant is the countdown timer, which is a different kind of chronograph. The countdown function allows the wearer to set a negative time interval. Once programmed, the timer is triggered as usual, but rather than beginning at zero, it begins a set time before, and when it reaches zero it continues to count upwards in the usual fashion.

Typologie des chronographes

Ulysse Nardin Marine Regatta, with 10-minute countdown timer © David Chokron/Worldtempus

The steel case of this Ulysse nardin watches price list in india Replica Marine Chronometer Annual Calendar is much like another variations with a sizable 43mm diameter and a fluted bezel. The crown has a rubberized covering, which is a nuisance to replace should it wear down with time, however, does improve the ergonomics. With a 100m water resistance rating, it is definitely swim-friendly for when you want to leap off your yacht.The dial of the Ulysse Nardin Marine Chronometer Annual Calendar Monaco is understandably a hectic one, but also for the main purpose of telling what hour and moment it is, it does a great job due to some white lacquered dial and big Roman markers painted a deep, rich blue. Each of the hands except the month index are blued and there’s even some Super-LumiNova on the hour and minute hands to enhance legibility in low-light. On top of the dial is the power reserve indicator and although it’s well implemented, I think it could’ve been left out given how complicated this dial was destined to get. A power reserve indicator on an automatic watch isn’t as practical as on a hand-wound one.At 6:00 is the date, month, and running moments index. The date is shown with the help of a date window and a wheel beneath. The circular window fits in much better than a traditional rectangular one. In some of the close-up pictures, you’ll observe that the date and the month of September are in blue while the remaining weeks are at black to indicate that the dates of this 2017 Monaco Yacht Show, which are September 27–30. So those four dates will also be gloomy, while all the rest are in black.

Behind the scenes, chronographs are categorised according to their clutch mechanism and controls. The most common is the shuttle or navette, an irregularly shaped cam that shuttles back and forth to trigger the different operations (stop, start, zero). The most prestigious is the column wheel, which includes a complex crenellated construction that fulfils the same function. The oldest type of clutch system still in use is the horizontal clutch. When the pusher is depressed, the wheel that guides the chronograph pivots horizontally to mesh with the movement’s seconds disc. The most modern iteration is the vertical clutch: the chronograph seconds wheel is lowered onto the movement seconds, where it engages quickly and cleanly. And, of course, different controls and clutch mechanisms can cohabit with different types of chronographs – it’s a jungle out there.

Typologie des chronographes

A. Lange & Söhne Double Split: double split seconds and minutes © A. Lange & Söhne


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