[CarPsyco84]

Heh, I second the ISO standards being a large paperwork waste, I've heard ASE cert for mechanics being similar... ISO just gives a dude up at the front desk something to do and comeback and pretend he knows how to calibrate the instruments out in the shop like those of us that actually use it don't know if its out of whack or not. The tolerances are pretty much set by whoever engineers the part(s) to set the tolerances tight when they need to be and not when it doesn't matter. The problem with getting a bunch of stupid office people that don't know anything involved is when the machine shop that makes the parts tells the customer that they either can't make the part to said tolerances or its too expensive, so then some clown at the customers company says thats ok you don't need to make that turbine shaft +-.0005" +-.005" will be ok.
stuff like this happens alot.
Oh, and all the US miltary parts we make at our work (which is alot of the parts we make), the prints are all metric, which is interesting because we have to use american made sheets of material and they only come in standard sized thickness, but the parts are engineered for metric standard thickness's so we have to get variances all the time for that stuff.