Draft sensing apparatus wherein effect of vertical deflection reduced to {HEAD ~ insignificant levels} compared to {TAIL ~ horizontal deflection} 
compared to
Draft sensing apparatus wherein effect of vertical deflection reduced to { HEAD ~ insignificant levels } compared to { TAIL ~ horizontal deflection }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL