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Diameter Dimensions

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    1. Click Annotate tabDimension panel (Diameter).
    2. Place the cursor on the curve of a circle or arc, and click.

      A temporary dimension displays.

      TipYou can switch the reference point for the dimension between a wall face and a wall centerline by pressing Tab.
    3. Move the cursor along the dimension line, and click to place the permanent dimension.

      By default, a diameter prefix symbol displays in the dimension value. To control the prefix display, see Permanent Dimension Type Properties.