The operator then selects a plurality of {HEAD ~ vertically spaced measuring points} along {TAIL ~ the front and side outline maps} 
The operator then selects a plurality of { HEAD ~ vertically spaced measuring points } along { TAIL ~ the front and side outline maps }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL