Adding Feature Control Frames
The AM_FeatureControlFrame command creates a feature control frame which you can attach to an entity in the drawing.
A feature control frame is a rectangular symbol used for displaying the conditions and tolerances of a geometric control on a part’s feature.
The command offers various geometric dimensioning and tolerancing symbols (GD&T) to specify geometric tolerances with feature control frames.
The feature control frame consists of the following elements:
- GD & T symbol
- Leaders
- Surface extension lines
- Surface indication leaders
Elements of a feature control frame

- Leader arrow
- Geometric characteristic symbol
- Diameter symbol
- Tolerance
- Modifier for the tolerance
- Datum
To create a feature control frame:
- Type AM_FeatureControlFrame.
- In the graphics area, specify an entity to attach the symbol to.
- Specify a point to define the leader.
- Specify one or more points to define the vertices of the leader and press Enter.
The first leader segment is vertical or horizontal. To override this restriction, press Shift + F as you move the mouse pointer.
- In the Feature Control Frame dialog box do the necessary settings.
- Click OK.
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