Crank Arm

This is self designed crank arm similar to used in avionics.

Notes: model "... NEW2.stl" is the same with heavier big rings (+2 mm diameter) for more solid look. I prefer it more.

I got inspired by an avionic desk lamp
http://www.thingiverse.com/thing:319339

But the legs lack the nice design of the main stand. So, lets redesign.
I have done it from scratch in Rhino. So do not expect it to be any usable :)
The biggest hole matching the lamp's down hole to be joined with a nice nut (wo