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Promoted item:Seiko Men's Black Dial Chronograph SNDD61. NEW!!

Seiko Men's Black Dial Chronograph SNDD61. NEW!!

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  • Condition
  • New
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  • 15h 9m
  • Brand
  • Seiko
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  • US $91.86
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  • Quantity 2Available
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Unique Chronograph Japanese movement
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About Chronograph

A chronograph is a type of a watch that can be used for timekeeping and stopwatch activities. They have been in production since the 18th century; however they gained popularity only after the 1820s. They can be used for a wide variety of purposes such as for races, finding the velocity of the bullets etc. The determination of they velocity of the bullet is very essential for the rifle shooters as actual velocity of the bullet helps in determining the actual trajectory. They can also be used for checking the consistency of hand loads and factory ammunitions. Shooting chronographs are electronic and have sky screens that help in calculating the velocity of the bullet from 30 fps to 7000 fps. This watch is set up on a tri-pod or a bench at a distance of about 10 feet from the user. In order to determine the velocity of the bullet, the user has to fire the gunshot through the centre of the V-rods and sky screens.With the help of a Chronograph one can determine the velocity of the bullet with 99.5% accuracy. There are two types of shooting chronographs ' Standard chronograph and Master chronograph. The Standard chronographs usually give the 'read out' directly on the screen, whereas the Master chronographs have a separate display unit that that gives the 'read out' of the velocity. The F-1 model and the F-1 Master Chronograph model give the velocity of the bullets on the base of the number of shots. They display the velocity of the bullet till the next shot is fired. There are many variations of chronographs that are available such as the Alpha and Alpha Master Chronograph, and the Beta and Beta Master Chronograph. These chronographs not only allow the user to determine the speed of bullets, however they also help in determining the speed of air gun and shotgun pellets, and paintballs.