4.1 Solution I 
  
  
  
  
| 
| P Comparison values 
| Je E % as illustration 
| 
Ls 
| Europe ....... 1.4826 1.00 68.3 h/5000 0.20 % * h 
| 4.4477 3.00 99.7 | "P 
| US A. 2.2239 1.50 86.6 | A 
| 4.4477 3.00 99.7 | h/1667 0.60 % - h | 
In the second case, »Solution II», with the c-factor maintained at the 
value 1500, the instrument constant will increase to 0.22 9. 
4.2 Solution II 
  
as illustration 
  
h/4500 022 %, - h 
4 
| 
Comparison values 
| 
| 
| 
| 
h/1500 0.67 % - h 
  
Based on the equivalency thus attained, the following table is calculat- 
ed from the range of common photogrammetric stereo-instruments. 
169