Double split?

[mretzloff]

Excuse my ignorance, but what is a double split and what is the point of it? Also, why does is significantly raise the price for a watch?

[Jedi]

It's an additional complication to a chronograph movemen. It is also sometimes called a split second. This is how it basically works:

2 hands for counting the seconds in chrono mode. When activated, they both measure off the seconds simultaneously, therefore it would appear that there is only one seconds hand moving. When the counter is stopped, the 2nd seconds hand continues to moving to continue measuring the time elapsed, enabling you to take a 'time' split, like for example a race, when first place has been timed and you need to know how far behind second place is.

[mretzloff]

Originally Posted by Jedi

It's an additional complication to a chronograph movemen. It is also sometimes called a split second. This is how it basically works:

2 hands for counting the seconds in chrono mode. When activated, they both measure off the seconds simultaneously, therefore it would appear that there is only one seconds hand moving. When the counter is stopped, the 2nd seconds hand continues to moving to continue measuring the time elapsed, enabling you to take a 'time' split, like for example a race, when first place has been timed and you need to know how far behind second place is.

When the chronograph function is not activated, does one hand rest still while one counts the seconds (like with a "normal" watch)? Or do both go around?

Thanks for the help.

[BigHat]

Depends. Here's how the Lange Double Split works. Believe the second hands sub-dial (at 9) runs independently of the chrono functions.

As the world's first | flyback chronograph with a | double rattrapante mechanism, the LANGE DOUBLE SPLIT opens up a new dimension in mechanical time measurement. Beyond the ordinary stopwatch functions of a conventional | chronograph, it can also handle lap-time measurements, time comparisons, and fastest/slowest lap measurements. Its additional flyback minute counter makes it possible for the first time to use these | rattrapante functions in a truly meaningful way, namely for events that last up to 30 minutes - as opposed to conventional rattrapante mechanisms that could only measure times of up to 60 seconds.

The newly developed balance of the LANGE DOUBLE SPLIT beats at a frequency of 21,600 | semi-oscillations per hour, allowing measurements to an accuracy of one-sixth of a second. Moreover, error-free readings are assured by the | precisely jumping chrono minute counter and the precisely jumping rattrapante minute counter. During an ongoing time measurement, the | flyback function will immediately stop and reset the chronograph hands (and, with them, the rattrapante hands if they are still running) with only one press of a button. A new measurement begins instantaneously when the button is released again. This skips the otherwise necessary "stop" and "reset" steps.

The remaining | power reserve of the LANGE DOUBLE SPLIT is permanently indicated by the small gold hand at 12 o'clock. The hour and minute hands are made of | rhodiumed gold; they are also | luminous. The LANGE DOUBLE SPLIT is available in platinum and with a reinforced | crocodile strap. A glance through the | sapphire crystal caseback reveals the true art of horology in a fascinating cosmos composed of 465 parts - the Lange L001.1 movement.

[topcat30093]

I love the L&S Double Split.
But I think that I would prefer the Datograph.
Here is PP answer to the Double Split the 5004 and it comes complete with a Perpetual Calendar.
The button on the top of the crown is whats used to operate the double rattrapante mechanism.

[BigHat]

I don't need this capability in a fine watch. My fav Lange is this one.