It is {TAIL ~ another object} of the present invention to provide a method and apparatus for the sequential monitoring of the working state of a production line which can be widely used in a variety of {HEAD ~ manufacturing operations} 
It is { TAIL ~ another object } of the present invention to provide a method and apparatus for the sequential monitoring of the working state of a production line which can be widely used in a variety of { HEAD ~ manufacturing operations }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD