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:

tol_sample1

Note: You cannot associate Tolerances with drawing entities.

The Properties palette lets you change several display properties of Tolerances, such as:

  • Style

  • Color of the text and the frame

  • Scale

If you select a Tolerance and the ribbon is active, the Tolerance contextual tab appears. The contextual tab groups options and tools for changing Tolerance properties.

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

dim_tol_11

Position

Location

dim_tol_12

Concentricity or coaxiality

Location

dim_tol_13

Symmetry

Location

dim_tol_14

Parallelism

Orientation

dim_tol_15

Perpendicularity

Orientation

dim_tol_16

Angularity

Orientation

dim_tol_17

Cylindricity

Form

dim_tol_18

Flatness

Form

dim_tol_19

Circularity or roundness

Form

dim_tol_20

Straightness

Form

dim_tol_21

Profile of a surface

Profile

dim_tol_22

Profile of a line

Profile

dim_tol_23

Circular runout

Runout

dim_tol_24

Total runout

Runout

Material condition symbols

Symbol

Definition

Type

dim_tol_mmc

At maximum material condition, a feature contains the maximum amount of material stated in the limits.

MMC

dim_tol_lmc

At least material condition, a feature contains the minimum amount of material stated in the limits.

LMC

dim_tol_rfs

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

Ribbon: Annotate > Dimensions > (Flyout) Tolerance

Related Topics

Editing Geometric Tolerances

Creating SmartLeaders

«Tolerance» Contextual Ribbon Tab

Parent Topic

Working with Leaders, Center Marks, and Geometric Tolerances