PSVPSCALE (System Variable)

Sets the view scale factor for all newly created viewports.

Type:Real
Saved in:Drawing
Initial value:0.0000

The view scale factor is defined by comparing the ratio of units in paper space to the units in newly created model space viewports. The view scale factor you set is used with the VPORTS command. A value of 0 means the scale factor is Scaled to Fit. A scale must be a positive real value.