Dimensions between Arcs or Circles

By default, distances are measured to the center of an arc or circle.

With the Smart Dimension tool, you can create:

• Dimensions between arc or circle edges.
• Dimensions between concentric circles.
• Ordinate dimensions to minimum, center, and maximum arc extents between arcs or between a line or a point and an arc.

Use circumference if you do not want the dimension location to be the center of the arc or circle. For details, see this blog post.