Temporarily change the grid size or return to the preset values.
Change the distance between grid lines
Type the new distance between grid lines.
Choose Construction > Grid Preset to customize the grid further. For example, you can turn on Labels to show distances between grid lines.
Expand or shrink the extent of the visible grid
To change the units of measurement set the Units modeling options in the Construction Options window.
Create a reference plane and set it as the construction plane.