Change Current Unit
This command sets:
The Document Unit, that is to say the unit of the current document. The new unit will be applied to the document but the data won't be changed.
The Default Document Unit, that is to say the unit of next new documents.
Requirements
No selection is required to launch the command.
You can use Resize to resize the objects in your document or Repair Project Unit to change the current unit and apply the corresponding scaling.