Generalplans for rural communes. Drawn map 1:10 000 with contours
of 5 meters interval, produced in a Wild A5 or an A 6. The net-work
and signalling were made in the same way as for the large areas. The
draft was made on correctostate and fairdrawn on plastic sheets.
General-plans for towns. Drawn map 1:4000 with contours of 2 me-
ters interval was produced in a Stereoplanigraph or a Wild A 5.
The net-work was made geodetically for the urban areas and pho-
togrammetrically for the surroundings. At least 5 points on each model
was determined as to their heights.
Passpoints and photogrammetrical netpoints were signalled.
The drawing was made on correctostate. The drafts were drawn
fair in Indian ink or were photographically reproduced on plastic sheets.
c) Farmplannang.
I. The Geographical Survey Office has in certain areas, where mo-
dern maps do not exist, produced a photo-map 1:20 000 for a brief outline
planning with an older economic map as a basis. Negative scale 1:30 000.
IT. Some of the maps, mentioned in B1 II, were used for detailed
farmplanning.
II. Some of the maps, mentioned in B1 II, were used for detailed
fermplanning.
IIT. The State Farming Organization uses the Economic Map and
the Photo-Map 1:10 000 and, where these maps are not yet produced,
aerialphotographs for brief outline farmplanning. Enlargements of the
Economie Map to a scale of 1:4000 were used to realize farmplans and
drainage projects.
d) Ore-prospectang.
I. The Geographical Survey Office has prepared maps on a scale
of 1:10 000 with contours of 5-10 meters interval from negatives 1:20 000.
The net-work is produced through air triangulation on the basis of chained
stretches and levellings. The stereoplotting was made in a Stereoplanigraph.
A photo-map seems to suit this purpose best. For the planning of
mining a photo-map 1:10 000 with contours of 10 meters interval was
produced over an area of about 150 km*?.
II. The photogrammetric division at the Royal Institute of Techno-
logy produced maps 1:10 000 with contours of 10 and 5 meters inter-
vals in a Wild A 6 from a negative 1:20 000.
e) Forestry purposes.
In Sweden the large-forestry marked an era for forestry photogram-
metry through the Board of the Crown Lands and Forests, and through
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