The rangefinder is an high precision optical instrument, capable of measuring the distance between the user and a given object. There are various types of range finders, the most common are the laser and ultrasound. Generally the optical system does not have high magnifications, ranging between 4x and 12x 15mm lenses up to 50mm the brightest (for civilian use). There are also optical instruments with rangefinders already incorporated, such as riflescopes used by those who practice hunting or target shooting where accuracy is very important.
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