Abstract: A relatively inexpensive compact golf training system with digital readouts of the theoretical carry and the distance to the right or left, from a straight drive, caused by either a slice or hook. The system is battery powered, portable and can be used in or out-of-doors by either a right or left handed golfer. There is no restriction on the type of club that can be used. A photodetector is used to reliably sense the movement of a slotted disk on the rotating shaft. The deflection of a stationary flexible disk measures the angle the plane of the rotating ball and tether make, if different from the plane of a straight drive. The system is microprocessor controlled for calculating the carry and distance to the right or left caused by a slice or hook.