| 摘要 |
<p>A golf putting stroke trainer (10) includes an inertial sensor (12) responsive to axial rotation disposed in electrical communication with an alarm circuit (37a, 37b, 62, 42). The trainer (10) is positioned within the head (5) of a standard putter and provides a user-detectable signal if, during a putting stroke, the putter is rotated around the longitudinal axis of the shaft (7) of the putter.</p> |
