Creating Geometric Tolerances

Use the Tolerance command to create and place datum indicators and basic Dimension notations in the drawing.

Following is an example of a Tolerance:

The following tables describe the Tolerance and material condition symbols you can select in the Geometric Tolerance dialog box.

Geometric characteristic symbols

Symbol	Characteristic	Type
	Position	Location
	Concentricity or coaxiality	Location
	Symmetry	Location
	Parallelism	Orientation
	Perpendicularity	Orientation
	Angularity	Orientation
	Cylindricity	Form
	Flatness	Form
	Circularity or roundness	Form
	Straightness	Form
	Profile of a surface	Profile
	Profile of a line	Profile
	Circular runout	Runout
	Total runout	Runout

Material condition symbols

Symbol	Definition	Type
	At maximum material condition, a feature contains the maximum amount of material stated in the limits.	MMC
	At least material condition, a feature contains the minimum amount of material stated in the limits.	LMC
	Regardless of feature size, indicates that the feature can be any size within the stated limits.	RFS

To create a Tolerance:

1. Click Dimension > Tolerance (or type Tolerance).
2. In the dialog box, from corresponding lists select symbols for geometric characteristics and material condition (M.C.) specifications. Select Diameter to turn on diameter symbols.
3. Complete the specifications by typing tolerance values in the corresponding text boxes.
4. Enter datum values as necessary and select appropriate material condition symbols.
5. Enter a Datum identifier.
6. Enter a Height for the Tolerance.
7. Add the Projected tolerance zone symbol if necessary.
8. Click OK.
9. Click in the graphics are to place the Tolerance.
   
   The Tolerance displays in the graphics area.

Access

Command: Tolerance

Menu: Dimension > Tolerance