AEC Entity Units
Keyboard: -DWGUNITS
Sets the drawing units to use for inserting and scaling AEC entities. You can also use the Linear tab on the Drawing Settings - Drawing Units tab to set AEC entity units.
Unit for length <1>: Enter 1 for inches, 2 for feet, 3 for millimeters, 4 for centimeters, 5 for decimeters, 6 for meters, 7 for kilometers, 8 for yards, or 9 for miles.