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