| 摘要 |
The present invention proposes a transparent insert (illustrated on attached drawings marked 3 on figure 3) with lines or other indicia printed or etched onto the upper surface of the insert (marked 1 on figure 3) and also onto the lower surface (marked 2 on figure 3) so that a three dimensional image is formed. The golfer by himself or with the help of a playing partner or a caddy can align the lines or indicia to achieve the desired putting stroke. |
