http://www.aaa3.net/how-to-scale-using-autocad/

In AutoCAD 2010 I want to set the scale to 1 inch = 100 feet How do I do that?
I’m using AutoCad 2010. Every time I type in the length of the line (500 feet for example) the line is to big for my screen. So I have to adjust the scale somehow.
You don’t need to set the scale, you just need to zoom out.
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AutoCAD Tutorials – Using the SCALE Command