Not sure if I understand correctly, but you have an object that rotates and you want to know what number or information is at the top when it stops?
I think the easiest would be to set up a condition, using the angle of the wheel. For example, check the angle of the wheel once it stops. If it is between angles 1-30 it is number 1, if it is between angles 31-60 it is number 2 and so on.