Units Options
You can set the units for dimensions, the sketch grid, and text height.
Select one of the following from the Units settings for drop-down list:
All New Documents to create a default detailing style for all your designs. These settings will not affect any currently open documents.
This Document to set options for the current design only.
Note: If you try to enter a value that is out of the allowed range in
the Options panel or the SpaceClaim Options dialog, you will see
a red exclamation mark icon next to the field. You can hover over the icon to see a
tooltip that will explain the valid values for the option.