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 {TAIL ~ indication}, for holding the optical conductor end 20 
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 { TAIL ~ indication } , for holding the optical conductor end 20
OTH OTH OTH OTH 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 TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH