| 摘要 |
The device is mounted on a horizontal surface in spaced relation to a putting hole or replica thereof. The head of a putter is releasably clamped on the face of a flat plate, which is mounted for limited rotation on the base of the device, and with the face of the putter in coplanar engagement with a pair of spaced, coplanar reference surfaces that lie in a generally vertical plane. At the outset the plate is locked in a starting position in which the putter face is accurately aligned with the hole-i.e., in a plane normal to a line connecting the center of the hole with the pivotal axis of the plate. The plate is then momentarily unlocked and the golfer rotates the handle of the putter as appears necessary to align its face with the hole. The plate is then locked in the adjusted position and graduations on the plate are read against a reference mark on the base to determine the misalignment introduced by the golfer.
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