| 摘要 |
PURPOSE: A four-way screen is provided, which increases the lifetime of a screen four times, lowers the cost, and makes installation easy. CONSTITUTION: A four-way screen includes a basic screen and a four-way screen. The basic screen is manufactured at the ratio of 4:3 and has no fault in the screen image. In the front side of the basic screen, one side of Velcro is installed. In the back side rim of the four-way screen, the other side of Velcro is attached. The four-way screen is formed in a square and disperses the hitting surface of the golf ball to four-way screen by rotating in four directions.
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