After seeing this post, I wrote a quick blog entry about how I create a scaled base map. Creating a Scaled Basemap
I like to use both paper/pencil/engineer scale and CAD for different stages of design. By scaling the map I can print, draw by hand, scan back in, and rescale as much as needed. You can also scale and overlay multiple screenshots such as boundary, soils, wetlands, ect and trace them in the cad program.