Issue:
AutoCAD: Dimensions in Layout Isometric View do not match Model Space.
Causes:
Dimension Style scale issue.
Solution:
This is caused due to scaling. You must set the Dimension Style to the Scale of the Viewport.
- Launch the Dimension Style Dialog box (Type Dimstyle and select the <Enter> key on your Keyboard) or (Select Annotation Tab in the Ribbon and select the dialog launcher (see image figure 1))
Figure 1
- In the Dimension Style Editor select New on the right-hand side to start a new Dimension Style.
- Set the Style up as you would like (best to copy a Style that is already what you want and then edit the new Style).
- Then select the Primary Units Tab.
- Select Apply To layout dimensions only.
- Then for the Scale Factor <Model Space Dimension Value>/<Dimension displayed in the Viewport > = Scale Factor. (example: Model Space Dimension 10/ Layout Dimension 2 = Scale factor is 5)
- Place this number in the Scale factor field.
- Accept and then use this Dimension Style for the Viewport Dimensions.
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