conversion from inventor to autocad: problem tolerances

[Maurog]

hi to all, I tried to look for but I find nothing on the problem that I expose you, has it ever happened that in the conversion from inventor 2014 to autocad the tolerances type 50 f7 (...) the writing f7 turned into various signs? I attach a simple dwg to make you understand. Thank you so much for who could give me some tips.

 

[stefanobruno]

changes the font in inventor

 

[Maurog]

I'll try to change the font, thank you. but this problem alone me with the 2014 version