That is, the lever 74 must have a total increment of 156 degrees of rotation or oscillation to produce {TAIL ~ one degree} of turning of {HEAD ~ the intermediate member} 28, and hence of the shaft 60 
That is , the lever 74 must have a total increment of 156 degrees of rotation or oscillation to produce { TAIL ~ one degree } of turning of { HEAD ~ the intermediate member } 28 , and hence of the shaft 60
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH