REPORT 
OF THE FINNISH SOCIETY OF 
PHOTOGRAMMETRY 
1952—1956 
GENERAL FEATURES. 
Organization and equipment. 
Official map-making in Finland is on the whole carried out on the basis of aerial photo 
graphy. In addition aerial pictures are used for several other purposes. Official map-making 
is now divided as follows: The Geodetic Institute carries out triangulations and leveling of 
I Order with scientific accuracy. The main mapping authority The General Survey Office 
has a Land Survey Department and a Geographical Survey Department, the latter divided 
into five divisions. The Geodetic Division carries out lower o der triangulation and leveling. 
The Photogrammetric Division is responsible for aerial pnotography, photogrammetrical 
control extension and the making of controlled mosaics. The Topographic Division carries 
out the field work for the base map, and in connection with it there is a map printing establish 
ment. The Cartographic Division is responsible for the small scale mapping. The plan Survey 
Division carries out plan surveys and schemes which are also ne by private surveying offices. 
The Defence Forces Topographic Service, in cooperation with the General Survey Office, 
supplies the maps required by the Defence Forces and undertakes the surveying of garrison, 
training and other areas. The Topographic Service has a Geodetic, Photogrammetric and 
Topographic section. The Photogrammetric Division of the General Survey Office and the 
Photogrammetric Section of the Topographic Service are working in close cooperation using 
partly the same methods. Their photogrammetric instruments are almost equal, consisting