Several years ago, Rachel Lopez, now a senior at Rio Rancho High School in New Mexico, learned that large numbers of seals, whales, dolphins, turtles, and other creatures get caught in abandoned fishing nets every year. “In 2006, more than 30,000 fur seals were killed off the Pacific Coast because of [abandoned] nets. It is a growing problem,” she says. That prompted Rachel to focus her science fair project every year since then on finding a better net.
Manufacturers of laser rangefinders claim that all of them are extremely accurate. The million-dollar question that then begs is, is this really true? The truth is that each model boasts enough accuracy to be accurate within one yard of the target’s true distance.
While this fact might be effortless to measure through hand for targets a couple of yards away, it’s difficult to verify when your target is almost one kilometer away. In fact, where would you get a tape measure to measure that?
Fortunately, you don’t need a tape measure to establish the accuracy of the best hunting rangefinder. A target’s distance is the only thing you need for basic understanding of the gadget measures. So how does it work?