It is thus possible to compensate unavoidable tolerances in the spacing between the free end 21 of {TAIL ~ the glow rod} 20 and {HEAD ~ 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 the spacing between the free end 21 of { TAIL ~ the glow rod } 20 and { HEAD ~ 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 OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH