A knob 52 is integrally attached to the fastener 48 at the end thereof opposite the washer 50 for allowing {HEAD ~ a user} to regulate {TAIL ~ the fastener displacement} between the second arm 44 and the shelf 62 
to regulate
A knob 52 is integrally attached to the fastener 48 at the end thereof opposite the washer 50 for allowing { HEAD ~ a user } to regulate { TAIL ~ the fastener displacement } between the second arm 44 and the shelf 62
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH