408 
of Sweden, the economic map and the topographic map. For these 
purposes, aerial photography has been carried out and the photograp 
hic material thus obtained, represented as shown i table 3 — below 
LllUL 
Table 1. Number of recorded pictures and area covered. 
Routine work 
Spec. 
ordered work 
In 
all 
Year 
Flying altitude 
< 3.900 m > 3.900 m 
number number 
Area 
km 2 
Flying 
< 3.900 m 
number 
altitude 
> 3.900 m 
number 
Area 
km 2 
number 
Area 
km 2 
1960 
1288 
7220 
77113 
11334 
49 
20868 
19389 
97981 
1961 
3021 
6932 
73488 
11369 
297 
15408 
19402 
88896 
1962 
1740 
7611 
76760 
9449 
— 
20655 
21017 
97415 
1963 
2037 
15333 
152185 
9821 
817 
17855 
28753 
169140 
Total 
8086 
37096 
378646 
41973 
1163 
74786 
88561 
453432 
Table 2. Photographic material made to order. 
Year 
Contact 
prints 
Rectified 
or enlarged 
photos 
Diaposi 
tives 
Mosaics 
Photographic 
reproductions 
number 
number 
number 
number 
number 
1960 
33201 
23464 
7572 
49 
3765 
1961 
30930 
30798 
8000 
36 
3835 
1962 
27140 
28220 
8350 
343 
6320 
1963 
32672 
28964 
8556 
251 
4421 
Total 
123943 
111446 
32478 
679 
18341 
Table 3. Representation of photographic material during the years 1960—1963. 
Year 
Number of original 
photo-maps, scales 
1: 10 000 and 1: 20 000 
Number of contour 
maps scales 
1 : 10 000 and 1 : 20 000 
Number of 
line-maps 
scale 
1: 50 000 
1960 
719 
480 
1961 
609 
651 
1962 
594 
751 
1963 
655 
889 
229 
Other production 
As mentioned earlier, the increased activity in the construction field 
in the country has led to a growing demand from planners for the 
rapid obtainment of photogrammetric material, above everything, in