If each engineer followed a slight variation in the method of producing engineering drawings, there may be waste or misunderstandings. Setting a standard to follow and not deviating from that standard is a good idea. One problem with this is that human nature often will rebel against such strict restrictions. Much of it depends on an attitude toward exactness. In conclusion The Taguchi approach and philosophy of reducing variations and seeking perfection, instead of accepting errors within some stated tolerance has been proven to be effective both in production facilities and in the office.
Many companies now manufacture using variability reduction.
It gives quality inspectors something to measure 2. It reduces tolerance build-up 3. If you had problems, you had better look over the material again. I will try to get back to you as soon as possible. Be sure to state the title or subject matter, so I will know to what material you are referring.