I know its not ment to be. But how do I retrain my mind to think its ok not to be so accurate? I'm not looking to model something with perfect precission but my mind thinks it has to be perfect. I wish Maya had such a thing as units. Well you can sub devide and make those your units. I do not know. I just gotta spend time in Maya but its very intimating. But you have push beyond that just like learning a new CaD software.Maya is not designed to be as accurate as a CAD program, but there are things you can do to model with reasonable accuracy. Getting good hi-res reference is a good start, but I realize this still comes down to eyeballing things. You can enter specific values for move, scale and rotation, which helps, but I don't know of a way to enter specific values for component translation, which I find very annoying.