I'm trying to understand the various plotting functions, and at the moment having problems with plotting 1 to 1 (full scale).

If i plot from PAPER space using the "window" to select the part i want to plot, leaving the "fit to paper" box blank, and choosing a 1:1 ratio, the plot output is NOT to scale. see attached "5.pdf"

However, If i plot directly from MODEL space using the "window" selection, leaving the "fit to paper" box blank, and choosing a 1:1 ratio, the plot DOES scale correctly. see attached "8.pdf"

Is there a way plot 1 to 1  from paper space?  Is it a matter of setting up the characteristics of the paper space layout? I think i've tried everything.