{TAIL ~ The printing pins} or {HEAD ~ wires} are abutted against a movable membrane or bellows portion of the container, so that container expansion effects linear movement of the pins or wires 
{ TAIL ~ The printing pins } or { HEAD ~ wires } are abutted against a movable membrane or bellows portion of the container , so that container expansion effects linear movement of the pins or wires
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH