Definition
The “Hack” function, or second hand halting, is a mechanism found in some mechanical watches that allows the second hand to stop when the crown is pulled out to adjust the time. This facilitates exact synchronization of the watch with a time reference, allowing for precise adjustments down to the second.
Origin
The term “hack” originated in the military environment, where precise time synchronization was crucial for coordinated operations. This feature began to be implemented in military watches during World War II, allowing soldiers to synchronize their watches accurately.
Usage
The second hand halting function is particularly valued in watches geared towards professionals who require precision in time, such as military personnel and aviators. It’s also cherished by watch enthusiasts and those seeking precision in their day-to-day activities.
Examples
Military and aviation watches, like some models of Hamilton and IWC, often possess this function.
Rolex implemented this feature in many of their models, such as the Rolex Submariner.
Synonyms
The terms “hack function” and “second hand halting” are used interchangeably, while “stop-seconds” is another common phrase.
Related Terms
- “Crown”: the part of the watch that is manipulated to activate the second hand halting.
- “Synchronization”: the practice of adjusting the watch to coincide with an accurate time source.
Tips
When using a watch with a second hand halting function, remember to push the crown back to its original position to restart the second hand’s movement and maintain the watch’s accuracy.
This function is useful for individuals requiring time precision, such as professionals in areas of timing or programming.
Fun Facts
The “hack” function was a significant innovation in the history of mechanical watches, highlighting the influence of practical needs, like those in the military, on watch design.
Despite its military origins, this functionality is now common in many everyday wristwatches, underscoring its utility and demand among a broader audience.