This scope is what it is, a small, graduated monocular. You must hold it steady to use it effectively. It should be used to augment your distance estimates, in addition to course markers, etc. You don't get sophistication at this price. For beginning golfers, it's better than a wag!

This item looks good on paper but in practice is quite unusable. In order to have a workable yardage reading from which to select a club, it is necessary to hold the scope absolutely rock solid while sighting on the green pin. This is an impossible task. While the manufacturer acknowledges that the reading is approximate, "approximate" takes on whole new meaning with this scope. Readings are easily + or - 20 yards. Compared with this size of an error, my eyeball does equally as good a job.