I am always looking for something to help me save time and always looking for examples on how other people do things so I just thought I'd share my new userform to change a hi/low or bilateral to a symetrical tolerance (we model to nominal by default)

I have set it up as a shortcut to the macro on my keyboard so I can select a dimension and run it quickly.

Here is a screen shot of the UI:

you only have to have a dimension selected and it will convert the value and apply the tolerance with increasing the precision if required over the documents default.

Enjoy. (and if you have any comments/criticisms please let me know)