Creates vertical ordinate dimensions in a drawing or sketch, measured
vertically from the entity you select first.
To create vertical ordinate dimensions:
With a drawing or sketch active, click Vertical
Ordinate Dimension on the Dimensions/Relations toolbar, or click Tools, Dimensions,
Click the first item from which all others will
be measured, and click again to place the dimension.
Click an item to dimension. Repeat this step until all the remaining
items are dimensioned.
The dimension tool remains in ordinate mode until you select another
mode or another tool.