Elementary rectification | At the scale! Number 
area (slit) at the scale | of original of 
Instrument of original photos photos points 
m 
(mn x mm) : iS 
Galileo Orthophoto Simplex ‚60 x 0,54 0.030 165 
  
  
Gestalt Photo Mapper I .18 x 0.02 0.031 193 
Kelsh K320 2.50 „38 0.073 176 
Kelsh K320 25 29 0.037 163 
Ortho SFOM 9300 35 50 0.070 163 
Wild PPO-8 .25 x 0.05 0.020 185 
Zeiss GZ-1 40 30 0.052 185 
Zeiss Ortho-3 .60 .40 0.043 191 
Zeiss-Jena Topocart/Orthophot .00 „25 0.026 180 
  
  
  
This test was not carried out for the Gestalt PM II and the Wild OR 1, since 
only one orthophoto was available at the time of the experiment. 
  
  
  
TABLE II. Root mean square values of x-parallaxes, measured 
in pairs of 1:2 500 scale orthophotos