Autodimension Tab of the Dimension PropertyManager in Drawings
Specify the following properties to insert reference dimensions into drawing views as baseline, chain, and ordinate dimensions.
Entities to Dimension
All entities in view. Dimensions all entities in the drawing view.
Selected entities. Dimensions only the selected entities. Click entities in the drawing view for Selected Entities to Dimension.
Horizontal Dimensions
The Horizontal Dimensioning Scheme controls the type of dimension
that include:
By default, the vertical point of origination
for the horizontal dimensions is based on the first vertical entity relative to the geometric coordinates x0,y0. You can select other vertical model edges or points in the drawing view.
Vertical Dimensions
The Vertical Dimensioning Scheme controls the types of dimension
that include:
By default, the horizontal point of origination
for the vertical dimensions (Datum - Horizontal Model Edge, Model Vertex, Horizontal Line or Point) is based on the first horizontal entity relative to the geometric coordinates x0,y0. You can select other horizontal model edges or points in the drawing view.
Origin
Sets the origin for the dimensions. Use an origin instead of horizontal and vertical datums. Select a horizontal edge to set as the zero starting point for all dimensions. To change the origin, select a different edge and click Apply.