To Create Concentric Circular Construction Lines (AutoCAD Mechanical Toolset)

Click Home tabConstruction panelCircleConcentric Circle. Find
Select an arc or a circle.
Specify a diameter value for the concentric circle. To draw more than one circle, type | (a pipe) between the diameter values.

About Construction Lines (AutoCAD Mechanical Toolset)

To Create a Construction Line Perpendicular to Two Points (AutoCAD Mechanical Toolset)
To Create a Construction Line at a Preset Distance From a Selected Line (AutoCAD Mechanical Toolset)
To Create a Circular Construction Line Tangential to Two Lines (AutoCAD Mechanical Toolset)
To Create a Circular Construction Line Tangent to a Line (AutoCAD Mechanical Toolset)
To Create a Construction Line at an Angle Relative to Another Line (AutoCAD Mechanical Toolset)
To Create a Construction Line Perpendicular to a Line (AutoCAD Mechanical Toolset)
To Create a Construction Line Tangential to Two Circles (AutoCAD Mechanical Toolset)
To Create a Construction Line That Bisects an Angle (AutoCAD Mechanical Toolset)
To Create a Construction Line (AutoCAD Mechanical Toolset)
To Create Construction Lines Automatically (AutoCAD Mechanical Toolset)
To Create the End View of a Shaft (AutoCAD Mechanical Toolset)
To Create Two Parallel Construction Lines Tangential to a Circle (AutoCAD Mechanical Toolset)
To Erase Construction Lines (AutoCAD Mechanical Toolset)

Commands for Working With Construction Lines (AutoCAD Mechanical Toolset)