*Y 
  
He 
0o/mm 
Diagram 16. Diagram of residual coordinate errors after adjustment in the five 
indicated points. Aviogon. Film negative. 
where (Fig. 2 a) R, = — dx, + dx9 — dx3 + dx, 
Ra = — dy, — dys + dys + dy, 
Rs = + dx, + dx9 — dxg — dx, 
Ry = — dy; + dy; —dyz + dy, (41) 
Ry = + dx, + dx, + dx, + dx, 
Re = + dy; — dys — dys + dy, 
Ry = + dx; — dxo — dxg + dx4 
Rg = + dy; + dys; + dys + dy,