It is thus possible to compensate unavoidable tolerances in {HEAD ~ the spacing} between {TAIL ~ the free end} 21 of the glow rod 20 and the face 4 of the filter body 2 with the aid of the spiral spring 26 
It is thus possible to compensate unavoidable tolerances in { HEAD ~ the spacing } between { TAIL ~ the free end } 21 of the glow rod 20 and the face 4 of the filter body 2 with the aid of the spiral spring 26
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH