Hello @Anonymous
I understand this thread is quite old but I wanted to ask if certain posts have helped you with your problem.
In the Print Setup dialog box, if you set the zoom to 100% of the papersize, the print should come out at full 100%. I have seen some instances where some pdf printers or physical printers with certain print drivers have built in margins which do not allow full print to the edge of the page.
This can result in a print, (say 1/4"=1' plan view placed on a sheet) and then printed at 100%, not scaling correctly.
The hardcopy will not measure correctly when you put a scale to paper, and hence does not equal 100%. of the paper size.
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