The hinge allows {HEAD ~ the user} to pivot {TAIL ~ the belt sander} between a first position and a second position to bring the abrasive surface of the belt sander into and out of contact with the work piece 
to pivot
The hinge allows { HEAD ~ the user } to pivot { TAIL ~ the belt sander } between a first position and a second position to bring the abrasive surface of the belt sander into and out of contact with the work piece
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH