GRIDUNIT (System Variable)

Specifies the grid spacing (X and Y) for the current viewport.

Type:2D-point
Saved in:Drawing
Initial value:0.5000,0.5000 (imperial) or 10,10 (metric)

To make the grid spacing default to the snap spacing, set GRIDUNIT to 0,0. Changes to GRIDUNIT are not displayed in the grid until the view is regenerated.