Pitch Grid
A Pitch Grid can be used to graphically measure the angle between two features on a stereonet.
To add a Pitch Grid to the plot:
- Select Pitch Grid from the Tools menu.
- Move the cursor over the active view. A great circle corresponding to the cursor position will be visible, with radial lines representing pitch angles. The pitch lines are at 5 degree increments and are oriented with respect to the strike of the plane.
To estimate an angle:
- Move the cursor until the plane passes through the two features in question.
- Click the left mouse button to add the pitch grid to the plot.
- Count the pitch lines between the two features and multiply by 5 degrees. This is the angle between the features.
Other uses for the pitch grid will become apparent as you become familiar with Dips.
After a Pitch Grid has been added, it can be moved, formatted, etc. See the Edit Tools Overview topic for details.
NOTE: For more precise angle measurements on the stereonet, use the Measure Angle 
option.
Right Click Options
The following options are available in the right-click menu while using Pitch Grid:
- Line – this will display a moving line through the center of the stereonet, which follows the cursor. Note that this line is NOT added to the plot when you add the Pitch Grid, it is a temporary graphical aid only. If you wish to add a line to the plot, use the Trend Line option.