| 摘要 |
A channel has a plurality of similar grooves in an inside surface of one side. The grooves extend perpendicularly to the edge of the inside surface. The outside surface of the side carries channel indicia of golf club types. A directional arm in the general shape of a picket has a tongue on one side with a shape complementary to the shape of a portion of the groove. The opposite side of the directional arm carries a golf ball placement indicium in the shape of an arrow.
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