The universal mounting consists of a first housing having a base attached to the boom and a power driven worm in drive relation with {HEAD ~ a worm gear} in {TAIL ~ the housing} 
The universal mounting consists of a first housing having a base attached to the boom and a power driven worm in drive relation with { HEAD ~ a worm gear } in { TAIL ~ the housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL