P1-700, P2-700 = 2 BS 3680 Flume        
P1-701, P2-701 = 1 Rectangular   
P1-700, P2-700 = 2 BS 3680 Flume       
P1-701, P2-701 = 2 Rect. + hump 
  
P1-700, P2-700 = 2 BS 3680 Flume       
P1-701, P2-701 = 3 U-Throated 
  
P1-700, P2-700 = 2 BS 3680 Flume       
P1-701, P2-701 = 3 U-Throat. + hump 
  
P1-700, P2-700 = 3 BS 3680 Weir          
P1-701, P2-701 = 1 Rectangular 
P700 = BS3680 Weir                    
P701 = 3 Rect. Broadcrested  
P1-700, P2-700 – 5 Special           
P1-701, P2-701 = 1 Palmer-Bowlus 
P1-700, P2-700 – 5 Special           
P1-701, P2-701 = 2 H - flume 
P1-700, P2-700 – 5 Special           
P1-701, P2-701 = 3 V–Notch angle