| 摘要 |
PROBLEM TO BE SOLVED: To improve putting techniques. SOLUTION: By holding a front vertical plate part 4B over the face surface SF of a putter PT, whether a golf ball GB has hit a prescribed position on the face surface SF is simply discriminated by the hitting out direction of the golf ball GB, so that an exercising person comes to strongly intend to hit the ball rightly. As a result, the putting technique of the exercising person is improved. COPYRIGHT: (C)2004,JPO
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