To Set the Overall Dimension Scale

  1. Click Home tabAnnotation panelDimension Style. Find
  2. In the Dimension Style Manager, select the style you want to change. Click Modify.
  3. In Modify Dimension Style dialog box, Fit tab, under Scale for Dimension Features, enter a value for the overall scale.
  4. Click OK.
  5. Click Close to exit the Dimension Style Manager.