The sequencer is also capable of rotating {HEAD ~ the beam} up and down in {TAIL ~ a vertical plane} 
up in
The sequencer is also capable of rotating { HEAD ~ the beam } up and down in { TAIL ~ a vertical plane }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL