Theoretically expected 
Operator RCM 
Operator TVG 
  
  
Case No. 
Tit (Q9) 
Conv. (7°) 
B/D 0.357 0.728 1.194 
  
Case No. 4 18 
Tilt (N°) 10 10 
Conv. (Y?) 0 60 
B/D 0.164 1.164 0.469 1.154 : 0.383 1.017 
Fig. 28 - Effect of convergence (Y) on 
Y