Well, I've worked on the fastest passenger jet until recently and that was bloody imperial. Don't ask me what relative sizes the nuts and bolts are as my mind wokrks in metric (most were 11/32 that I needed to use, with a few 3/8ths thrown in for good measure). Still, I suppose you can't complain about it as its 40 years young and still going.
Any guesses as to what it is?
