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ISO 14405 Series: Advancing Size Tolerancing in Geometrical Product Specifications
The ISO 14405 series forms a critical component of the Geometrical Product Specifications (GPS) framework, which standardizes the way dimensions and tolerances are specified and verified in engineering drawings and manufacturing processes.
Flatness – Surface vs. Feature of Size
Surface flatness is the type of flatness that most people are familiar with. On a drawing, the flatness callout can point straight to the surface with a leader arrow or be extended out from the surface and away from the feature of size.