TABLE OF CONTENTS After completing this lesson, you will be able to:
Add Diameter, Radial and Angular dimensions to your drawing.
Draw Center Marks.
Control the size and appearance of the Center Marks.
Understand the need for Sub-Styles.
Create a Sub-Style.
The DIAMETER dimensioning command should be used when dimensioning circles and arcs of more than 180 degrees.
Select the Dimension / Diameter command or 
.
Command: _dimdiameter
Select arc or circle: click on the arc or circle (P1). Location is not important; do not use object snap.
Dimension text = the diameter will be displayed here.
Specify dimension line location or [Mtext/Text/Angle]: place dimension text location (P2).
If you would like to FLIP the direction of the arrowhead:
Select the dimension
Press the right mouse button.
Select Flip Arrow from the menu .
If you would like your Diameter dimensions to appear as shown in the two examples above, you must change the Fit Options and Fine Tuning in the Fit tab in your Dimension Style.
The RADIUS dimensioning command should be used when dimensioning arcs of LESS than 180 degrees.
Select the Dimension / Radius command or 
Command: _dimradius
Select arc or circle: click on the arc (P1). Location is not important, do not use snap.
Dimension text = the radius will be displayed here
Specify dimension line location or [Mtext/Text/Angle]: place dim text location (P2)
If you would like...
