Rangefinders

Rangefinders use laser technology to measure distances, and they are very accurate. The process is quite simple: the user points the rangefinder at the flag and pushes a button. The laser will measure the distance between the person and the flag. The rangefinder will then give the exact distance in yards or meters, depending on the settings. https://dailyrangefinder.com/best-golf-laser-rangefinder-with-slope/