Circularity controls how closely a round edge or round face follows a perfect circle. Use it for turned diameters, bores, pins, cones, and other features of revolution where each cross-section must stay round without referencing a datum.
Faces Or Edges
Select a circular edge or a round face. Edges are useful when the requirement applies to a specific rim or cross-section. Faces are useful when the requirement applies along a cylindrical or conical surface.
Tolerance
Set the allowed roundness variation in the current unit system. The circularity tolerance zone is defined by two concentric circles whose radii differ by the tolerance value.
Precision
Choose how many decimal places to display for the tolerance value.
Frame Position
Place the feature control frame near the selected round feature while keeping it readable.
Frame Plane
Choose the display plane for the annotation. Use XY, XZ, or YZ to keep the frame facing the
intended view.
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 Circularity annotation uses gdt::circularity
with selected faces or edges and a tolerance. Circularity is a form tolerance, so it does not use
datums.
Want to find out more about the gdt::circularity function?
Check it out in our KCL docs.