Setting a File's Units and Transform
You may need to use this feature when working with Clash Detective and/or Presenter, where it's important to have the model in the correct units and scale, to ensure clash results are accurate and materials are applied correctly. You may also find this useful if you append several models from different sources into the same scene and the scale, rotation and origin of some models need amending to match the other models.
The first thing to try, however, before attempting to manually adjust the file's transform, is to check that the units are ok. See for a discussion of units and how to adjust them.
Note
If you select an item that is inside the file and do a File Transform on it, the whole file will be transformed - not just the item selected. To transform a specific item within a file you will need to use the Override Item Transform function.
Also, only single files can be transformed at one time - this command is not available if multiple files/items are selected.
In the selection tree, select the file that you wish to transform the scale, origin or rotation of.
Go to Edit, File Units and Transform...
The File Units and Transform dialog will appear:
Move the model's location by entering model units for the x, y and z axis in Origin
The Reflected Transform checkbox only needs to be checked if a negative scale has been set.
Change the rotation of an object by entering an angle of rotation and selecting the axis to rotate about (by entering a value greater than 0). The object rotates about its origin point.
Amend the size of the object by entering values greater than 0 (to proportionally scale an object ensure the x, y and z scale values are equal). A negative value will in effect flip the object inside out.
Choose OK