You can create a new line features spaced along
selected area/line features that are perpendicular to those selected features
at each point. To do so, first select one or more area/line features,
then right click and select the Advanced Feature Creation submenu option
Perpendicular Lines Spaced Along Selected Line/Area Feature(s)....
You will be prompted to select the spacing between lines and also the
total length of each perpendicular line in the Sample Spacing Setup dialog
Spacing options include Fixed Number or Fixed Distance for the selected Area or Line Feature.