To Create a Centerline Cross in a Corner (AutoCAD Mechanical Toolset)

Click Home tabDraw panelCenterline drop-downCenterline Cross in Corner. Find
Press ENTER to display the Select Options for Centerlines dialog box, or specify the first contour line.
Specify the second contour line.
Specify the offset of the center-cross from first contour line by using the pointing device or enter a value.
Specify the offset of the center-cross from second contour line by using the pointing device or enter a value.
Press ENTER.
Specify a diameter value for the hole to create a cross with a hole, or press N for No to create a centerline cross without a hole, and then specify a diameter value for the cross, or press S for Standard Parts to insert a standard hole.