{TAIL ~ The plug in assembly} 28 shown in FIG 2 comprises a plug pin 30 formed with {HEAD ~ a central longitudinal hole} 32, which is illustrated only by way of indication, for holding the optical conductor end 20 
{ TAIL ~ The plug in assembly } 28 shown in FIG 2 comprises a plug pin 30 formed with { HEAD ~ a central longitudinal hole } 32 , which is illustrated only by way of indication , for holding the optical conductor end 20
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH