Each worm gear selectively moves {TAIL ~ a rack} which is an engagement with a postage print wheel so as to provide {HEAD ~ rotational movement} to the print wheel 
Each worm gear selectively moves { TAIL ~ a rack } which is an engagement with a postage print wheel so as to provide { HEAD ~ rotational movement } to the print wheel
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH