To Define Grid Settings
You can set the display of the grid by setting the relevant configuration options. You can apply the changes for the current session, or save them to a config.pro file.
To change the display only for the current session, perform the following actions:
1. On the View tab, in the Grid group, click 
. The Grid Settings dialog box opens.
. The Grid Settings dialog box opens.2. Select a grid type.
3. Click Dynamic or Static to define the grid spacing. If you select Static, accept the default x and y values or type new ones.
4. Additional options are available for a polar grid:
◦ To change the number of radial lines, type a new value in the Line quantity box.
◦ To change the Angular Spacing, type a new value in the box.
◦ An additional option is available for a polar grid set to Static. To change the Radial Spacing, type a new value in the box. The specified value must divide evenly into 360.
5. Type a new value for the grid angle.
6. Click OK.