ently. 
accuracy 
photogram- 
universal 
S by means 
hey consist 
ementary 
ction of 
nstruct ba- 
whatever 
oordinates 
OOm, 
of tilt 
25? 
30? 
es of grou 
tion to the 
400m on the 
Om to +700 
s. Maximal 
= 55’ and 
is passif 
errors, 
using geo- 
ingle model 
for AT mus 
n.altimetr! 
height of 
metric ern 
mm at the 
mmies rela 
21:5 OOO 
or in plan 
Ivory Coast 
Rhodesis 
1 
1 
Ad 4 
Ad 4412€ 
c) 
a). 
- 58 — 
Photogrammetric Plotting Instruments. 
metry max. t1,2m, 
in triangulation on control grid the 
reading differences of base compo- 
nents bx and by max. 0,03 Zn and 
bz - 0,02mm, longitudinal tilt 
max. 0,1. n mm, swing of the model 
max. 0,03 Vn m, model deformation 
max. 0,014 Va” + 2 n, net scale de- 
‘ation àb & 1 - 
viation T= = 7666 » mex. azimuth de 
  
viation 2?, 
in triangulation on CNIIGAiK dummies 
with minimal net length of 9 stereo- 
pairs the mean square error in plani- 
s 
metry nm, = + 2,0m, mean square alti- 
: + : : 
metric error my Sur 0, 7m, longitudi- 
nal tilt of the model $ 10m, swing 
£ 2,2m, model deformation $ 1,7m, 
scale difference $  M:1 000, war- 
ping $ 3m. 
The service is not completely equipped 
yet. The plotting instruments were in- 
stalled in 1966. We suggest to install 
two I9" order instruments. Training of 
operators and surveyors dealt with the 
projects for 1966, some of which conti- 
nue in 1967. Present situation: plotting 
in the scale 1:50 000 and 1:200 000 and 
completition of originals. 
Checks also on perpendicularity, ortho- 
gonality, focal length setting.