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