... the Imperial system having too many advantages, especially where precision measuring has to be done. And this is probably why the Imperial system has shown such resilience in the face of the rest of the world. Not "just" because Americans are so stubborn!
Precision measuring depends on the device and the standard you calibrate it with. It has nothing to do with the graduations on the device. Having said that, the really high precision devices tend to be calibrated in metric - measuring to nanometres or less. As well, they are all calibrated off metric reference standards - even your Imperial measurements are based off metric reference standards.
