Resistance stacking was a large lesson: each small inconsistency substances across settings up, so shop illustrations specify voids

https://www.scribd.com/document/1041492153/The-Legacy-of-Hand-Fabricated-Metal-Personalized-Leader-Boxes-Designed-to-Sustain-a-Century-231508

Tolerance stacking was a big lesson: each tiny variance compounds across assemblies, so shop illustrations define gaps, shims, and port lengths to make certain a best site fit.