3 
INTRODUCTION 
Comparing contents and spirit of my first national report of 1934 with this one in 1964, 
which will be my last, the difference demonstrates the enormous growth in position of 
photogrammetry. The first report, covering the four years in which photogrammetry was 
accepted in this country for the first time, describes the method for production of the river 
map of Rijkswaterstaat in 1 : 10,000 and that for the topographic map 1 : 25,000 of the 
Military Topographic Service and parallel to all this the use of the stereoplanigraph C4 
for large-scale mapping for engineering purposes by the then newly established Survey 
Department of the Ministry of Transport and Waterstaat. It became automatically a report 
written with a certain enthusiasm by the author, who was involved in all these new applica 
tions. It is full of results trying already at that time to prove that the precision of photo 
grammetry is beyond the doubt of many of the surveyors. The application of photogram 
metry was entirely new and gave those, working in this field, the encouraging impression 
moving somewhere in the front line of development. 
Looking now at the situation in 1964, it is no longer the satisfaction about the generally 
accepted application in photogrammetry, but more the development of more sophisticated 
methods than in the early days. Regarding the use of analogue plotting machines, there is 
from time to time some refinement, but since 1934 no difference in principle. The develop 
ment took place in determination of control points by means of aerial triangulation with 
application of analytical methods and improvement of the computation technique for its 
adjustment. If we look at this subject only, it may be that in the 1964 national report, some 
thing again of the spirit of the 1934 report could be justified. Especially in Chapter III 
dealing with aerial triangulation, the important improvements will be mentioned. 
The map producing organizations in the Netherlands are: 
a. The Survey Department of the Ministry of Transport and Waterstaat, “Meetkundige 
Dienst van de Rijkswaterstaat, Delft (Chief Ir. A. J. van der Weele). 
b. The Topographic Service of the Ministry of Defense, “Topografische Dienst”, Delft 
(Director W. F. den Hengst). 
c. KLM Aerocarto Ltd., Schiphol and Delft (Director Th. J. de Bruyn). 
d. The Topographic Service of the N.V. Bataafsche Petroleum Mij. (BPM), Royal 
Dutch Shell Group (Chief Ir. Burkij). 
The scientific and educational organizations dealing with photogrammetry are: 
1. Geodetic Institute of the Technological University at Delft (Director Prof. R. Roelofs). 
2. International Training Centre for Aerial Survey at Delft. 
3. Geodetic Institute of the Agricultural University at Wageningen (Director Prof. 
A. Kruidhof). 
Regarding map production it may be mentioned that the Topographic Service of the 
Ministry of Defense is in charge of the small-scale mapping of the country by production of 
the topographic maps in scales 1 : 10,000 and smaller, of which the maps 1 : 50,000 and 
smaller are for military purposes and the larger scale maps are important for general civil 
purposes. The Survey Department of the Ministry of Transport and Waterstaat at Delft 
still produces all large-scale maps needed by technical services belonging to this Ministry 
and, in some cases, also for other government services. The photogrammetric division of 
the Cadastral Service which has been considerably increased since 1960, is in charge of