When thinking about this final decision the final rule I prefer to use is an element of 10 for my fixture portion tolerance relative to my production element. One example is: A laser Reduce element will have a positional tolerance of +/- .005” dependant upon the laser. in accordance with https://minivariablefrequencydriv44208.mybjjblog.com/the-greatest-guide-to-positioning-angle-ruler-45842258