Symmetry controls how closely a feature's derived median plane aligns with a datum center plane. Use it when opposing surfaces must remain balanced around a datum plane, such as centered grooves, slots, tabs, or features where mass distribution matters.
Faces Or Edges
Select the face or edge whose median plane should be controlled. Choose the geometry that represents the feature of size being inspected.
Tolerance
Set the total width of the symmetry tolerance zone in the current unit system.
Datums
Add the datum label or labels that define the center plane. Symmetry requires at least one datum reference.
Precision
Choose how many decimal places to display for the tolerance value.
Frame Position
Place the feature control frame near the controlled feature while keeping it clear of other callouts.
Frame Plane
Choose the display plane for the annotation. Use the plane that keeps the callout readable in the view where symmetry will be reviewed.
Leader Scale
Adjust the visual scale of the leader dot.
Font Size
Set the model-space height of the annotation text.
Are you interested in code?
Zoo Design Studio writes KCL behind the scenes. A Symmetry annotation uses gdt::symmetry with
selected faces or edges, a tolerance, and datum references.
Want to find out more about the gdt::symmetry function?
Check it out in our KCL docs.