Geometric Dimensioning & Tolerancing - GD&T

But note that features are always things that we can touch So the hole is a feature The axis of the hole is not a feature Likewise a slot is

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gd&t slot 016″ at MMC on a slot The tolerance is referenced to datum feature A at RMB, which is the width of the part

fun88 slot online Geometric dimensioning & tolerancing is a system used to define and communicate dimensional requirements on manufactured parts