Further, an annular alignment mark AM having {HEAD ~ a point} of intersection between the optical axis 01 and the image pickup element of the television camera 3 as the center of symmetry and segments X and Y are displayed on the television monitor 5 by the output of {TAIL ~ the computer} 
Further , an annular alignment mark AM having { HEAD ~ a point } of intersection between the optical axis 01 and the image pickup element of the television camera 3 as the center of symmetry and segments X and Y are displayed on the television monitor 5 by the output of { TAIL ~ the computer }
OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL