- busterwasmycatLv 78 months ago
a machine tooling of parts using abrasion to make it take on a shape. precision means that the grinding is done to a very fine level of detail. Usually involves some sort of computer-based equipment because we humans are not able to be so precise as a general thing.
The idea is that finished object has to have a very perfect size and shape, which is the idea of "precision". Being off by a little bit is not acceptable.