Golf Scope with Distance Scope ( Range Finder) in Hard Case, Power 8X, Diameter of Objective Lens 21mm Blue Coated Lenses Must be the most popular golf scope in the world. Based on the monocular design, it has a rangefinder that measures the distance between the golfers and the hole by looking through the scope, and lining up the flagstick on the green against the yardage indicators in the scope. It helps when the golfer need to line up that difficult shot. The golf scope rangefinder is in dual range - both meters and yards (pin distance from 50 to 200 yards/meters), so it's suitable for the golf courses that either use meters or yards. Complete with fold up case and comprehensive instructions.