Symbols of gd and t ?

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GD&T stands for Geometric Dimensioning and Tolerancing. It is a system of symbols used to specify the dimensions and tolerances of a part.

GD&T is used to ensure that parts are manufactured to the correct size and shape, and that they fit together properly.
The symbols used in GD&T include straightness, flatness, circularity, cylindricity, profile, and position.
For example, a straightness symbol might be used to indicate that a line on a part must be perfectly straight, while a position symbol might be used to indicate that a hole must be located within a certain distance from a reference point.
GD&T is commonly used in industries such as aerospace, automotive, and manufacturing.
It is important for mechanical engineers to have a good understanding of GD&T in order to design parts that can be manufactured accurately and efficiently.

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