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 |
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Position | Location |
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Concentricity or coaxiality | Location |
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Symmetry | Location |
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Parallelism | Orientation |
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Perpendicularity | Orientation |
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Angularity | Orientation |
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Cylindricity | Form |
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Flatness | Form |
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Circularity or roundness | Form |
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Straightness | Form |
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Profile of a surface | Profile |
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Profile of a line | Profile |
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Circular runout | Runout |
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Total runout | Runout |
Material condition symbols
Symbol | Definition | Type |
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At maximum material condition, a feature contains the maximum amount of material stated in the limits. | MMC |
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At least material condition, a feature contains the minimum amount of material stated in the limits. | LMC |
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Regardless of feature size, indicates that the feature can be any size within the stated limits. | RFS |
To create a Tolerance:
- Click Dimension > Tolerance (or type Tolerance).
- 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.
- Complete the specifications by typing tolerance values in the corresponding text boxes.
- Enter datum values as necessary and select appropriate material condition symbols.
- Enter a Datum identifier.
- Enter a Height for the Tolerance.
- Add the Projected tolerance zone symbol if necessary.
- Click OK.
- Click in the graphics are to place the Tolerance.
The Tolerance displays in the graphics area.
Access
Command: Tolerance
Menu: Dimension > Tolerance
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