Choosing everything in the list will delete only unused scales.

If one has mixed metric and Imperial scales, use the Reset option, select the correct units (metric in this case), and then use the Delete button for best results. As you can see in the default scale list at the lower right of the screen shot below, I selected and deleted all the scales I don't need, keeping only usable ones. ”First, edit the default scales list to match your needs. 'There are times when you wish there were no drawing scales, right? Here is the workaround to keep the scale list short and in line with your needs. Frequent tipster Danny Korem shares a tip about cleaning up the Annotated Scales list in your AutoCAD files.