May, 1960 Commission III 185 
  
  
  
TABLE V 
T | 
| I-order plotters | II-order plotters 
Total strip lengths triangulated 55,000 km 160,000 km 
Models per machine per day 4.5 7.7 
  
  
Although Canada is one of the countries pioneering in analytical methods, analytical 
aerial triangulation has not yet been used in practical operations because there is a lack 
of the necessary precise stereocomparators. Therefore, the above information only 
covers non-analytical aerial triangulation. 
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