A range finder is a device used to measure the distance from the observer to a specific target. It works by emitting a laser beam or using other methods, such as triangulation, to calculate the distance based on the time it takes for the signal to return. Range finders are commonly used in various fields, including hunting, archery, and golf, to help users make more accurate shots or decisions. There are two main types of range finders: optical and electronic. Optical range finders use lenses and reticles to estimate distance visually, while electronic range finders use laser technology for precise measurements. Both types are valuable tools for outdoor activities and professional applications, enhancing accuracy and efficiency.