Hi,
Sounds lie I really need to get down to it
Regards your actual question. Why would you need to fire an event every 15 degrees?
else, try to invert the logic: instead of firing every 15 degrees, know the speed and fire every x milliseconds, that would end up being the same.
else, make a trigger attached to the reel and as it spin pass through the winning line, and fire that. you can make then as many triggers as you want around the reel.
the problem with degrees and angles in general is that it's not very convenient to work with it, because of the looping situation after 360, etc etc. So I would try another approach personally.
bye,
Jean