To summarize, it can be stated that the connection error and the 
accuracy are such that photogrammetric triangulation can be used when 
mapping in the scale 1:400, in any case when the area exceeds 100 hec- 
tares (six stereo models with the negative scale of 1: 4000). In practice 
there are as a rule a greater number of control points than was the case 
in the test work. This means that there are good possibilities of disco- 
vering gross errors as regards the given coordinates and that the final 
result will normally not be inferior to the test values. 
Table 1. The result of photogrammetric model triangulation. 
Unit — metre 
Number of stereo models ........ 
Number of photostrips Mesa ein ied 
Negative scale .......-.-...++.- 
€ 
Stereoinstrument ................ 
Computation crece yn 
Computation. .............+.- 
Corrections 
Number of horizontal controlpoints 
Number of vertical controlpoints . 
Standard error of unit weight, s, 
Connection error, 5, 00.00. 
Control points and signalled con- 
nection points 
Coordinate 
Radial ................... 
Natural connection points 
Coordinate 
Radial 2.25.28 1 ers 
Total, sh 
Coordinate 
Radial .:............. 
Accuracy 
Coordinate . .. 20.0 00 
Radial. N 
= 15 
— 3 
— ]:4 000 
— Wild A7 
— Data programme AB Geocode 
P 412 
1 2 3 
None Affine Affine 
11 12 6 
33 33 27 
0.05 0.05 0.05 
0.028 0.031 0.028 
0.040 0.044 0.040 
0.036 0.037 0.038 
0.050 0.052 0.053 
0.032 0.034 0.033 
0.046 0.048 0.047 
0.063 0.044 0.054 
0.089 0.062 0.077 
215