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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.

To dimension between the edges of two arcs:

  1. Click Smart Dimension (Dimensions/Relations toolbar) or Tools, Dimensions, Smart.

  2. Select the edge of the first arc, and then select the edge of the second arc.

  3. Press Shift, and then click to apply the dimension between the two edges.

  • Applies a minimum dimension between the first and second arc conditions.

  • Opens the Dimension PropertyManager where you can change the way the distance is measured.

To change the way the distance is measured:

  1. Click the dimension between arcs.

To display both First arc condition and Second arc condition in the Dimension PropertyManager, select the edges of both arcs with the Smart Dimension tool.

  1. In the Dimension PropertyManager, select the Leaders tab.

  1. Under Arc Condition:

    1. Set a value for First arc condition.

    2. Set a value for Second arc condition.

  2. Click .

First arc condition


Second arc condition









To dimension between concentric circles and display extension lines:

  1. In an open sketch, click Smart Dimension  (Dimensions/Relations toolbar) or Tools, Dimensions, Smart.

  2. Click the edge of one concentric circle, then click the edge of the second concentric circle.

  3. Click to place the dimension.

  4. Click .


To display extension lines after placing the dimension:

Right-click the dimension and select Display Options, Show extension lines.


You can also drag extension lines to new attachment points and change the position of radial dimensions.

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