Dimension Radial

Use it!

Used to:

• Dimension the radius of a circle or circular arc.

• Dimension the diameter of a circle or a circular arc.

• Place a center mark at the center of a circle or circular arc.

The placement of Extension Lines is controlled in the Dimension Styles box (Extension Lines category). If the tool setting Center Size is set to a negative value, Extension Lines (if on) extend outside the circle or arc.

Tool Setting	Effect
Style	Displays the active dimension style. Drop-down list box allows you to select other available dimension styles.
Magnifying glass icon	Opens the Dimension Styles dialog box, which is used to control settings for dimensioning.
Mode	Sets the type of dimension to place — Center Mark, Radius, Radius Extended, Diameter, or Diameter Extended.
Alignment	Sets the axis along which the dimension is aligned.
Association	If on, an association point is created. If off, no associations are created.
Center Size	If Mode is set to Center Mark, sets the size of the center mark.

To dimension the radius of a circle or arc

1. Select the Dimension Radial tool.


2. In the tool settings window, set the Mode to Radius.


3. Identify the circle or arc.


4. Enter a data point to position the dimension.


5. If the dimension is to be placed outside the circle and Location is set to Manual, enter another data point(s) to form a multi-segment leader line. Reset to complete the dimension.

   Dimension Radial with Mode set to Radius. Left, inside circle. Center, outside circle with Location set to Automatic. Right, outside circle with Location set to Manual.

To dimension the radius of a circle or arc with an extended leader

1. Select the Dimension Radial tool.


2. In the tool settings window, set the Mode to Radius Extended.


3. Identify the circle or arc.


4. Enter a data point to locate the end of the leader line.


5. If Location is set to Manual, enter another data point(s) to form a multi-segment leader line. Reset to complete the dimension.
   A radial leader is extended to the center of the circle or arc.

   Dimension Radial with the Mode set to Radius Extended.

To dimension the diameter of a circle or arc

1. Select the Dimension Radial tool.


2. In the tool settings window, set the Mode to Diameter.


3. Identify the circle or arc.


4. If the dimension is to be placed inside the circle, this data point defines an endpoint of the dimension.


5. Enter a data point.
   If the dimension is placed inside the circle, this data point accepts the dimension.
   If the dimension is to be placed outside the circle and Location is set to Automatic or Semi-Automatic, this data point positions the dimension.


6. If the dimension is to be placed outside the circle and Location is set to Manual, enter another data point(s) to form a multi-segment leader line. Reset to complete the dimension.

   Dimension Radial with Mode set to Diameter. At left, inside the circle. At center, outside the circle with Location set to Automatic. At right, outside the circle with Location set to Manual.

To dimension the diameter of a circle or arc with an extended leader

1. Select the Dimension Radial tool.


2. In the tool settings window, set the Mode to Diameter Extended.


3. Identify the circle or arc.


4. Enter a data point to position the dimension.


5. If Location is set to Manual, enter another data point(s) to form a multi-segment leader line. Reset to complete the dimension.

   Dimension Radial with Mode set to Diameter Extended.

   
   A radial leader is extended across the center of the circle or arc with terminators that point outward.

To place a center mark in a circle or arc

1. Select the Dimension Radial tool.


2. In the tool settings window, set the Mode to Center Mark.


3. Identify the circle or arc, or its center.


4. Accept the center mark.

   Dimension Radial with Mode set to Center Mark. Left: Extension Lines off. Right: Top, Bottom, Left, and Right Extension Lines on.

Key-in: DIMENSION RADIAL

or

Key-in: DIMENSION <CENTER | DIAMETER | RADIUS> <EXTENDED | NOTE | POINT>