ABSTRACT
The professional organisation of the surveying system is the key to reliable mapping. In Palestine, as everywhere, the first organisational step entailed the establishment of a suitable geodetic infrastructure of base measurements for all the planimetric and altimetric surveys and mapping.1 The system was built up step by step from three groups of surveys: layout and measurement of triangulation points; the measuring of spot heights according to the precise levelling method; and the determining of a geodetic projection for the country. These stages were linked to each other in a skeleton framework, independent in their own place and integrated in one system. All the fixed points in the field were tied mathematically into one national net. They served as control points in a joint reference system for all the survey projects throughout the country. Without such a net there could be no common basis for surveying.
