Error with Mirror command in CAD: number and character are reversed by reason of not editing MIRRTEXT variable.
Note: If you want the symmetric image of character lines to not be reversed, before using Mirror command you fix variable MIRRTEXT = 0 (default value MIRRTEXT = 1)
- Command: Mirrtext
- Enter new value for MIRRTEXT <0>: Enter the new value

Good luck!
Thanks for reading!!!
You can see more useful writings about CAD… here
Related posts
Light command in AutoCAD – Create and change the lights
Hatch Edit command in CAD
Len command – Lengthen command in AutoCAD – The command to shorten objects in CAD
Rectang command in AutoCAD – draw rectangle
Pface command in AutoCAD – Polyface command – Create 3D flat polyface
Render command in AutoCAD – Create the shaded images
Change the interface of CAD high version to CAD 2007
Notes for dim in Autocad
CHA command in AutoCAD – Chamfer command – Chamfer Solid