Hi Morsie,
Yes, same tool. I position it as it as in the picture, but around the upper hand arm, ellbow position. That way one can well move the forearm, but not straighten the ellbow (very limited upper arm movement). The ellbow has just little room for movement.
So I can use it for both issues at the same time or one at a time. It's an easy to built tool, very valuable for throwing short heads in the Scandi style as I teach it mostly.
Regards
Bernd