{HEAD ~ An elongated and spring biased adjustment bar} exhibits a plurality of spaced apart apertures defined along its length and is secured in {TAIL ~ axially displaceable fashion} relative to and through the housing 
is secured in
{ HEAD ~ An elongated and spring biased adjustment bar } exhibits a plurality of spaced apart apertures defined along its length and is secured in { TAIL ~ axially displaceable fashion } relative to and through the housing
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH