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GD&T
GD&T is a core engineering term. Definition, usage notes, and a practical example.
Definition
GD&T is geometric dimensioning and tolerancing.
Why it matters
It defines form, orientation, location, and runout requirements by function.
How it is used
In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.
Example
Position tolerance controls hole location more clearly than simple plus-minus dimensions.
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Formulas
No formulas added for this term.