One issue that recently came up was forcing the isometrics to use feet and inches for dimensions less that 2 feet. For example, in the iso below the dimension 20 1/4” should read 1’ 8 1/4”.
For AutoCAD isometrics, the bulk of the display settings are stored in a single file, the IsoConfig.xml.
In a text editor (we like TotalEdit), open up the IsoConfig.xml and search for ImperialDimensionInchCutoff.
Change the 24 to 12 and run your iso.
With AutoCAD Isometrics you get easy setup and configuration, and a powerful feature set too.