Golf Swing Shallowing Aid

Designed a shallowing aid for my golf swing that is easy to use. 

Key features include - 

1. hole size for US driveway markers (5/16" standard, ~8mm)
2. Just screw into any 2x4 wood block you have about the house
3. Very small size print
4. AMS is optional, the letters are raised
5. Adjusted the third hole angle for GW rather than SW which really more used