Pivot hinge with fine adjustment for vertical on the pin.

[Frank S]

When I leave this world, I have made up my mind not to come back until evolution catches up with my desires. 4 arms 2 thumbs on each hand the ability to make a reverse or inverted fist 270° rotation of my wrists in either direction and a 3rd eye with full light spectrum vision. until then I'll wait or go some other universe and teach them all I know, providing I have the ability to use the other 70 to 90% of my brain which is inaccessible now