{HEAD ~ The locking pin} is mounted to {TAIL ~ the upper body} and can thus be moved or adjusted up and down, relative to the lower body by threadedly engaging the upper and lower body sections 
is mounted to
{ HEAD ~ The locking pin } is mounted to { TAIL ~ the upper body } and can thus be moved or adjusted up and down , relative to the lower body by threadedly engaging the upper and lower body sections
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL 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