{TAIL ~ The pivot shaft} is moved horizontally by a threaded adjusting screw toward and away from {HEAD ~ a vacuum chuck} in a silk screen printing machine to compensate for changes to the length of the workpiece to be carried by the vacuum chuck 
{ TAIL ~ The pivot shaft } is moved horizontally by a threaded adjusting screw toward and away from { HEAD ~ a vacuum chuck } in a silk screen printing machine to compensate for changes to the length of the workpiece to be carried by the vacuum chuck
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH