I am trying to show dual units with inches stacked on top of millimeters. In dual units mode the inches will not show the fraction, rounds down, and will not show the unit mark. Unit mark is checked for the document preferences and the precision is set to 1/16 for both the unit settings and the dimension setting. Does anyone know why this is happening and how to get the inches in the dual unit dimension to look like the inches in the single unit dimension?