Archers do have many questions:
"How does my arrow leaves the bow?"
"Do I have a good clearance?"
"Does my arrow touches the rest, the plunger, the handle or even my hand?"
Without High-Speed Films it is not easy to get those answers!
Beiter Clearance Stars are contact indicators, showing where the arrow touches the bow and accessories attached to it (such as Plunger, Rest...) on leaving the bow window after the release.
With the Beiter Clearance Star you can test at a very short distance (e.g. 3m!).