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