Linear dimensions annotate linear distances or lengths and can be oriented horizontally, vertically, or aligned parallel to an existing entity or to the selected extension origin points. After you create a linear dimension, you can add a baseline dimension or a continued dimension. A linear baseline dimension inserts an additional dimension from a common first extension line origin of a previous linear dimension. A linear continued dimension continues a linear dimension from the second extension line of a previous linear dimension.
TIP To select precise ordinate points, use entity snaps.
Tell me about...
Creating diametral and radial dimensions
Creating leaders and annotations
How do I...
Create a horizontal or vertical dimension
Create a linear baseline dimension