Answer:
Well that's simple, if you live in America, get a dollar bill and measure it with a ruler.. stop being so lazy, but if you live in the U.K, like me, then it gets a bit more tricky. First find someone who knows an 'unlazy' American who CAN move, to get a dollar bill and measure it for you. unfortuantly, not many Americans will bat an eyelid to this though, they are faaaar too busy to look at money and measure it... i mean, that would waste 10 seconds of their lives!!!!! shock horror!
How many smug Brits does it take before you find one with a healthy set of teeth? Cavemen had better oral hygiene practices than these non-evolving freaks.