Form Tolerances and Positional Tolerances

3-D Dimensioning + Text > Surface/Edge > Form/Pos

Form tolerances and positional tolerances are used to ensure the functioning and exchangeability of workpieces and assemblies. Form tolerances limit the permissible deviation of an element from its geometrically ideal dimension. Positional tolerances are direction, location and run-out tolerances. They limit the permissible deviations of two or more elements from the ideal position in relation to one another. 

The geometrical tolerances are specified in a rectangular frame - the tolerance frame. It consists of two or more compartments containing the symbol for the feature to be toleranced, the tolerance value, the letter for datums.

.The tolerance specification can either be aligned horizontally or vertically.

	Form/Positional tolerances Inserts new form/positional tolerances into the drawing
	Show, All in part Shows hidden form/positional tolerances of the active part again
	Show, All Shows all hidden form/positional tolerances again
	Hide, Individually Hides single form/positional tolerances
	Hide, All in part Hides all form/positional tolerances of the active part
	Hide, All Hides all form/positional tolerances
	Settings Defines the text parameters for form/positional tolerances

 

Alternatively, you can access the 3-D functions for form /positional tolerances via the context menu: Right-click on an existing tolerance. In the context menu you will also find various functions enabling to process existing form/positional tolerances.

Dimensioning (3-D) • Dimensioning - Procedure (3-D) • Process Form/Positional Tolerances (3-D)