GD&T Explained Through Drawings and 3D Parts

A technical drawing assembles from a blank page in the first 2.75 seconds, then the lesson moves from a physical assembly to a concrete limitation of ordinary dimensions by 1:05. The 5:19–5:37 replay peak shows a translucent derived plane crossing a metal part, giving viewers a spatial explanation of an otherwise invisible rule. The measured four shots undercount the visible animation changes; the full video runs 29:31, placing it outside this library's short-form reference range.