I have ever post a topic related to this post.
I have a difficult problem. This is, how can i determine width of a square when i click inside it. And i have attach file autocad.
And i have do the same suggestion of @zrobert And success. But I can not apply for file autocad(I have attach) . In my file Autocad have a lot of squares( each square have number) and a lot of layer. Anybody can help me solve this problem. Thank very much.