| 摘要 |
<p>A golf tee peg or teeing cup comprises and the new design an arm e which projects from the body of the tee peg d at such an angle and of such a length that when the tee peg is in use the tip of the arm can be seen by the golfer when he addresses the ball c to protrude from behind the ball. By observing any relative movement between the tip of the tee peg arm and the periphery of the golf ball the golfer can detect whether he moves his head during the course of swinging the club. <IMAGE></p> |
