Originally Posted by Teacher
Oh, that's easy. They're used for things like navigation (in directions/degrees), determining fuel efficiency, determining speed over a quarter-mile, determining the distance of artillary, determining when the next full solar eclipse will be, and divining the date of your ultimate doooooooooom!
None of those dials can do the artillery thing, but I'll buy the rest.
Then again, if the Iranians are
using something that imprecise, I say bring on the invasion