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Nuts & Volts Magazine (March 2017)

Build a Simple Inexpensive Ballistic Chronograph

By Ron Newton    View In Digital Edition  

Ballistic chronographs are used to measure the velocity of a fired projectile typically from a gun. This unit can be used to measure all kinds of fun things like the speed of a pea shot from a straw, the muzzle velocity of a Nerf® gun, or maybe even the speed of a Hot Wheels® car in mid-jump. The chronograph described here measures 14" L x 5" W x 2.5" H and weighs 18 oz. The readout will fit in the palm of your hand. This unit has many similar attributes to the more expensive commercial models at a fraction of the cost.


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