This device also makes possible measurement of {HEAD ~ the gap} for {TAIL ~ the profile base} indirectly on line 
for
This device also makes possible measurement of { HEAD ~ the gap } for { TAIL ~ the profile base } indirectly on line
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH