Learn AutoCAD right from scratch with this free video tutorial series from SourceCAD
https://sourcecad.com/courses/autocad-essentials-course/
In this video I will tell you about methods of adding dual dimensioning and tolerance in AutoCAD drawings, the tolerances like symmetrical, limits and basic can be added by modifying dimensions style and that feature is explained in complete detail.
This video also explains methods of adding dual dimensions like mm and inches for the same dimension using common dimension style.
Downlaod the drawing used in this video here https://bit.ly/3BlyMwc