In another forum this trivia question was posed:
There is a silver ball that floats in the oil tank window of a UH-1 helicopter as an aid to check the oil level. I believe it's insides are cork so that it floats, whats it covered with?
Of course the smart arse replies that it is covered with oil have already come up. Anybody have a real answer so I can pretend to be a star?
Thanks,
IFMU