93 
During the last few years, however, several private firms have extended 
their activity to other countries, consequently a certain part of the pro 
duction apparatus in also made use of for mapping outside Sweden. 
The Swedish Society for Photogrammetry every year procures informa 
tion regarding the staff, the amount of instruments, and the production 
from organizations in Sweden actively engaged in photogrammetry. The 
tables below constitute a compilation of these reports. In spite of the 
fact that the reports are not complete in every detail, the tables should 
anyhow give a good picture of how the production has advanced during 
the last four years. 
Table 1. 
The number of large photogrammetric 
instruments 
1964 1965 1966 1967 
Stereo instruments of 1st and 2nd order 94 110 
Rectifying instruments 6 6 
Aerial cameras 6 6 
Sum total 106 122 
123 
5 
7 
135 
128 
5 
5 
138 
The main part of the stereo instruments (64 % in 1967) are of the 
make Wild, as are all the aerial cameras. Among the rectifying instru 
ments, all delivered by Zeiss of West Germany, is a Gigas-Zeiss Orto 
Projector. 
Table 2. 
The number of persons wholly or 
part-time employed in photogram 
metric production 
1964 
1965 
1966 
1967 
Staff with college training 
43 
40 
49 
47 
Engineers, stereo operators etc 
374 
440 
425 
457 
Draughtsmen 
125 
148 
171 
267 
Sum total 
542 
628 
645 
771