A marker for properly marking the spots for on the pool table for placing the pins.
It was primarily made to save our billiards club's money, but it also improves upon commercial options (as I have also created a 5-hole variant, where you do not need to move or rotate the marker at all for improved accuracy).
This model is a part of my Five Pin Billiards set. I've also created a tool for correctly placing the opponent's ball in five pin billiard.
The author marked this model as their own original creation.