In the News: Jerking the Trigger: Wndsn XPD Distance Calculator

I highly suggest you take a look at Wndsn XPD. They currently offer a number of products including their very slick Distance Meters which are trigonometry based with no moving parts and no electronics. These cards allow the user to make use of a specific length of cord, a scale printed on the card, and an object of known size to determine distance.

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