Check Answer Button

I provided this extra little nudge to get the visitor to check his answer after the planet and moon were chosen. You can see in the pictures below that the white Delrin disks have magnets around their perimeters. Whenever the wheels are positioned for a guess, two reed switches in series will energize the “Check Answer” button. Please note: this arrangement energizes the check answer button irrespective of whether the answer is right or wrong.