Because the term rangefinder was being so widely used, and its meaning had become blurred, the Institution of Civil Engineers suggested it be replaced with the word tachometer. Several very different devices were labeled rangefinders at one point, including a resistance thermometer, which is used to measure temperature, and an electrical strain gauge, which determines the amount of strain on an object. But by the late 19th century, electrical engineers were applying the term rangefinder to devices they used to measure different quantities. Regardless of who historians believe invented the very first rangefinder, most agree that it originated in the steam age. This involved two mirrors positioned horizontally that made two images in the same eyepiece. In 1781 Georg Friedrich Brander made the coincidence telemeter. A man named Alexander Selligue is sometimes credited with the invention of the range meter, and while he did develop the model that became popular among the masses, he isn’t the original inventor.Īmerican spies during the Cold War used them to determine the locations of Soviet missile tests. A man named James Watt invented it in 1769 and his version was made up of two parallel hairs that sat inside the focal plane of a telescope eyepiece. The very first rangefinder was called a micrometer. Some act like night vision devices, with brightness control technology that offers ocular contrast, changing with the surrounding light conditions. Night hunters need a laser rangefinder with a display screen that is adjustable to various light conditions. This will take different shooting angles into account when calculating distance. Individuals who use a bow and arrow need a model with built-in incline/decline technology. Hunters and military members benefit from models that determine whether or not an object is moving, and at what speed. Some also have high definition optics, allowing the user to examine their target close-up on a small screen. This can be especially important for military personnel, since they use their rangefinder in life or death matters, and cannot afford to shoot the wrong target. Some models provide feedback on shot clearance, so the user can be certain nothing will get in the way of their target. Laser rangefinders are popular among hunters, in various sports, and with military personnel. It does this by using the time of flight principle the rangefinder sends a laser pulse in a narrow beam to a target, and based on the amount of time it takes to reflect off of the target and return, the distance can be obtained. Since we realize that recreational golfers won't want to spend an arm and a leg on a rangefinder, we also included the budget-friendly Precision Pro Golf Nexus, which has a surprising amount of features considering the low cost.Ī laser rangefinder is a device that measures distance and other characteristics of an object through the use of a laser. Both the Bushnell Pro X7 Jolt and Bushnell Tour V4 Jolt provide tactile feedback when they have locked onto a flag, minimizing the chances of getting an inaccurate reading. Unfortunately, it isn't allowed in tournament play, so most professional players would do well to choose a model that allows slope to be turned off, such as the Nikon Coolshot Pro Stabilized or Leupold Gx 5I3. For golfers, the ability to compensate for slopes when determining yardage to a hole can be very helpful and is a great aid when practicing. The Leica Rangemaster CRF 1600-B and Leupold RX-1200i Tbr offer true ballistic range, which make them very useful for anyone shooting over uneven terrain. For example, while the majority of golfers may leave the course early if it starts to rain, hunters often don't have the luxury, so they should choose a water-resistant model, like the Vortex Optics Ranger or TecTecTec VPro500. Hunters and golfers have different requirements for their laser rangefinders, so it is important to choose a model best-suited to your needs.
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