This contributes to the fact that {HEAD ~ close tolerance} machining to effect {TAIL ~ a fit} between these components is no longer necessary 
machining to effect
This contributes to the fact that { HEAD ~ close tolerance } machining to effect { TAIL ~ a fit } between these components is no longer necessary
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH