precision machined components are named as such because they are precise in their application and later output of the machine’s intended outcome. With extremely low tolerances and fit that needs to be achieved with modern precision devices, these types of machined components are almost prerequisite for modern manufacturing.
Machining is an old concept but over the years with the introduction of computers and software, a new dimension of precision, fit and tolerance has been added to the manufacturing process. Turning, milling, drilling, honing, griding and other machining process fall into this category, all of which are aided by CAD and CAM programs.