Briefly, the invention contemplates {HEAD ~ an adjustable arm} having {TAIL ~ a base member} with a base rotatable joint member connected to the base member 
having
Briefly , the invention contemplates { HEAD ~ an adjustable arm } having { TAIL ~ a base member } with a base rotatable joint member connected to the base member
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH