37 
600 A 
ny 
490 4 
My 
360 A 
240 4 
120 - 
60 À 
30 À 
0 T T T T T T T T T T —n 
5. 10 15. 20 30 40 50 
Diagram 7. Stereo-radial triangulation. Standard errors of the x- and y-coordinates. 
Cantilever extension. s, = I. 
1.224. Error distribution after bridging 
We assume the strip to be triangulated in the coordinate system of 
the first model and consequently also on an approximate scale. Two 
control points are assumed to be available, one in the pair —1,0 and 
one in the pair n,n + 1, see fig. 1. 
The control points are assumed to be favourably located within the