{TAIL ~ Bore} 37 extends horizontally at right angles to bore 34 in {HEAD ~ top bracket} 30 and accommodates set screw 39 
{ TAIL ~ Bore } 37 extends horizontally at right angles to bore 34 in { HEAD ~ top bracket } 30 and accommodates set screw 39
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH