Comment 13 for bug 168777

(You can verify this by deleting the viewbox element, either with a text editor, or with Inkscape's XML editor. When you do, the drawing gets very small, as you noted with the direct eps import, but font sizes are drawn correctly).

If you think the workflow that led to the creation of this file is something other users might reasonably try, perhaps you want to open a new bug about problems with pstoedit import (I think this one has enough extraneous issues that it's better to close it and start fresh...