Feature Control Frame

A geometric tolerancing feature control frame consists of a geometric characteristic symbol, up to two tolerance areas, and up to three datum reference areas.

 

To insert a feature control frame:

1.	Click the Feature Control Frame tool from the Dims/Notes tool set.

2.	Click on the drawing to insert the feature control frame. Click again to set the rotation of the object.

If this is the first time the object has been inserted in this session, the Object Properties dialog box opens. If the Attributes palette has not been set to use end markers, select the marker style, size, and angle from the Object Properties dialog box.

3.	Set the feature control frame parameters in the Object Info palette.

If the leader is not immediately visible, drag it from the frame using the leader control points.

 

Parameter	Description
Geometric Characteristic	Select the geometric characteristic symbol, if any
Composite Box	Select to increase the size of the geometric characteristic box; this is used when placing a second feature control frame
Tolerance Area #1/#2	Select to include Tolerance Area #1 and/or Tolerance Area #2
Tolerance	Enter the tolerance value
Show Diameter Symbol	Select to display a diameter symbol along with the tolerance value
Material Condition	Choose the material condition, if any
Statistical Tolerance	Select to display a statistical tolerance symbol
Projected Tolerance Zone	Select to display a projected tolerance zone symbol
Zone Height	Enter the maximum projected tolerance zone height when a projected tolerance zone symbol is displayed
Place the PTZ symbol outside the FCF	Select to place the projected tolerance zone symbol outside and to the bottom of the feature control frame
Primary/Secondary/Tertiary Datum Reference	Select to include the primary, secondary, and/or tertiary datum reference
Reference	Enter the desired reference letter
Material Condition	Select a material condition, if any
Leader Position	Select left or right

Once the feature control frame has been placed, its marker can be selected from the Attributes palette (see Marker Attributes).