A measuring method for determining the distance between the distal end of an endoscope and an object to be examined uses an optical radar and {HEAD ~ an endoscope}, which comprises {TAIL ~ a distance measuring device} 
comprises
A measuring method for determining the distance between the distal end of an endoscope and an object to be examined uses an optical radar and { HEAD ~ an endoscope } , which comprises { TAIL ~ a distance measuring device }
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 OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL