A further object is to describe an apparatus that does not require a complex housing, known from the existing art, for the cylindrical sensor head in {HEAD ~ order} to mechanically connect {TAIL ~ the sensor head} to a holder in oriented but nevertheless axially displaceable fashion 
to mechanically connect
A further object is to describe an apparatus that does not require a complex housing , known from the existing art , for the cylindrical sensor head in { HEAD ~ order } to mechanically connect { TAIL ~ the sensor head } to a holder in oriented but nevertheless axially displaceable fashion
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 REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH