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You can assign a unique scale type to any associative dimension. This allows you to maintain multiple dimensioning formats within the same drawing.

To assign a unique scale type to different parts in a drawing:

1. Select Dimensions from the Utility menu or press D to display the Dimensions menu.
2. Select Linear.
3. Select Lock Scale.
4. Choose the measurement scale type (Drawing, Arch., Eng., Decimal, etc.) you want to use to dimension something in your drawing. Right-click to return to the previous menu.
5. Toggle on the placement option (Horizontal, Vertical, Aligned, or Rotated) you want to use.
6. Object snap to the first point of the distance you want to dimension.
7. Object snap to the second point of the distance you want to dimension.
8. Pull the dimension line and click when you are satisfied with its position. If DataCAD cannot automatically position the dimension measurement, you can place it where it will fit on your drawing.

In the following example, Lock Scale enabled us to use different scale types to dimension entities in the same drawing.