Comment 58 for bug 192923

Did some more reasearch on the topic. Found that Inkscaspe uses pstoedit to convert .svg to .ps and after that to .dxf. Is that correct?
Next thing I did was downloading pstoedit (ghostscript was also needed) to see what additional options it has when converting.
Look for pstoedit dxf options here: http://www.helga-glunz.homepage.t-online.de/pstoedit/pstoedit.htm#section_49

First I tried the different options for spline and polylines.
There are 3 that worked:
-splineaspolyline together with -splineprecision number (I think this is what bob cook does)
-splineasmultispline (this seem to be your implementation)
-splineasbezier (this generates some other types of splines...)
What is missing in my opinion is a way to convert curves into autocad arches which i was able to convert to some kind of curved polylines
That is the way how some tools (for example http://www.techni-soft.de/html/SplineExplode.htm) are doing it.

Second I noticed when converting like this: "pstoedit -f "dxf:-option1 -option2" deinegraphik.ps deineknovertiertegraphik.dxf"
I don't have the scaling problem any more. option1 should be -mm then autocad seems to recognize it pretty well.