7 This quality control criterion consists of calculation of length of the links between corner nodes of mesh faces.
9 *To apply the Length 2D quality criterion to your mesh:*
11 .. |img| image:: ../images/image34.png
13 #. Display your mesh in the viewer.
14 #. Choose **Controls > Face Controls > Length 2D** or click *"Length 2D"* button |img| in the toolbar.
17 Your mesh will be displayed in the viewer with links colored according to the applied mesh quality control criterion:
19 .. image:: ../images/length2d.png
23 **See Also** a sample TUI Script of a :ref:`tui_length_2d` filter.