Shuffleboard compass (stainless steel) for measuring the gap between the shuffleboard and the master.
To measure the gap between 2 pucks and the master, simply place the tip of the compass on the edge of the first puck and the second tip on the edge of the master. This gives you the distance between the 2 pieces.
Now all you have to do is transfer this distance between the master and the 2nd puck to measure which of the 2 pucks is closer to the master, and therefore scores the point.
Made in France.