| 摘要 |
<p>A golf swing trainer has a ball (41) on a support shaft (40) fitted into a rotating head (20) on top of a mounting with a display for the results of the swing. The angle of the support shaft, and hence the height of the ball, is adjusted by twisting an adjusting knob (10) on the top of the rotating mounting. The rotating mounting is fitted to the mechanism via concentric cylinders and adjustable spring supports.</p> |
