The angle β, which extends between the tangent of the breakaway edge A and the perpendicular to {HEAD ~ the outlet plane} of {TAIL ~ the tube} 20, is the same size as angle β 
of
The angle β , which extends between the tangent of the breakaway edge A and the perpendicular to { HEAD ~ the outlet plane } of { TAIL ~ the tube } 20 , is the same size as angle β
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH