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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. In the graphics area, specify the position of the Tolerance.

    The Tolerance displays in the graphics area.

Access

Command: Tolerance

Menu: Dimension > Tolerance



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