Well L3X provided me with a nice tool to verify a measurement for scale built in .. I printed the inside reinforcement strip and the 2 pieces that attached to it and used it as a shoulder measuring tape.
Which I got lucky at the default scale and they rest perfectly at the bumps on bones my shoulders leaving about a 1/2 inch on either side before it drops off my shoulder. That should allow for plenty of arm rotation with out it dropping down.
Just a shopped figure to compare.. I like the figures since they do have articulation factored in.
I found my weekend project. Can't wait!