You
can create a group of linear dimensions measured from the same location.
When you create baseline dimensions, your first selection defines the baseline position. For subsequent selections, dimensions originate from that initial baseline. You can select items such as edges, vertices, circles, and midpoints.
In drawings, baseline dimensions are reference dimensions driven by the geometry. You cannot change their values or use the values to drive the model.
In parts and assemblies, you can add baseline dimensions in sketches. They can be driving or driven.
Baseline dimensions are automatically grouped, and they are spaced at the distances specified in under Offset distances.