I'm not sure where I learned it cause it was so long ago but it is standard drafting practice to have text read from the bottom or right side of the sheet. Everyone I have talked to is in agreement on this.
However, there is a rather large discrepancy in opinions as to what angle past 90 degrees you should rotate the text. As a matter of fact we are having somewhat of an internal argument on this subject. I have checked a few drafting books but could not even find anything that said text should read from the bottom or right let alone at what angle you should rotate the text.
I have attached a PDF file that shows what I am talking about. The text in the example is all reading from the right and starts to look upside down the further the angle gets from 90.
With that said, I am looking for two things:
People's opinions on what angle you should rotate the text.
And more importantly industry standards for this angle. I am hoping someone may have an old drafting book that documents an angle. If you do have some documentation, a reference to the book or a PDF copy would be greatly appreciated.
Thanks in advance.
EDIT: I just noticed the PDF is rotated 180. You will need to rotate it in the viewer to see it correctly.