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Learn to Use Common GD&T Symbols

Common GD&T Symbols

Geometric Dimensioning and Tolerancing GD&T uses symbols to represent feature characteristics and dimensions. Here is a list of the most common symbols you'll use when writing and reading GD&T:

Common GD&T Symbols - DCS Training

Geometric Category refers to whether or not the Feature Control Frame includes a Datum Reference Frame (DRF.) Tolerances for individual features do not have DRF’s. Tolerances for related features control one or more features relative to the specified DRF.

 

Often Used GD&T Symbols - DCS Training

 

Additional Symbols - DCS Training

 

Datums and Related Symbols - DCS Training

Feature Control Frames - GD&T with DCS

 

Using GD&T Geometric Dimensioning and Tolerancing 

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Where Do You Start with GD&T?

The best to place to start is to discuss implementation with an expert. DCS and its partners across the globe have ASME certified trainers who can discuss implementation, adoption, best practices, and provide training courses to get your people up to speed. 

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