, even b) to give informations with the largest amount of particulars on practical 
amely methods, all positive applications, the intensity of their application and 
s and their value, so as to establish an otherwise unattainable source of in- 
round formation. 
vib be It is useless to insist on the importance of scientifical research since it obviously 
raphy creates the presupposition of all future developments. However, since photogrammetry 
x held is a technique at the Services of a determinated producing field, it is equally important 
d 4ho to possess a detailed information on the different proceedings that local situations 
and particular market request have suggested or imposed, quite apart from those of 
scientific proceeding plannings. 
UR The different solutions found by practical experience, pressed by a contingent 
urge, can be useful to suggest proceedings to other people making use of photogram- 
yhich, metry in similar cases. The situation, as sketched out by scientific research is, 1n fact, 
x this hardly detectable in daily applic: ation except In very rare cases. The practical procee- 
ts: to ding i is always the r esult of a combination of different constituting elements frequently 
speed of an absolutely diverse nature. 
The person devoted to photogrammetry observing the range of different appli- 
cations and contaminations of aerial triangulation, cannot help feeling admiration 
about the adaptability of the rigid theoretical principles which in practice have been 
modified, manipulated, transformed and merged together to obtain a positive and 
satisfactory result, both from a technical point of view and an economical one. 
f pho- In consideration of these reasons we have purposely underlined in our Report, 
in the part dedicated to the inquiry on the position of aerial triangulation technical 
applications and. consequent results, a character of wide information of the different 
eniro sides of the activity itself in the different Countries and different contingent situations. 
xiliary c) The exposition of technical proceedings used in practice and contained in 
h alti- the second part of the report, requires, owing to the remarkable disparities they 
present, a division of the different working modalities based on the most rational 
classification. This necessity has in its turn emphasized the vast field of interest of 
> diffe- Commission III. 
yway, Single direction aerial triangulation (or per strips) both for difference in operative 
proceedings and different applications must be distinguished from aerial triangulation 
ie. afo- in an areal sense (or per blocks). Within, then, these two first. divisions mentioned 
shapes above some proceedings which, from a general point of view, differentiate more and 
elp of more, serve both for aerial triangulation per strips and per blocks. Namely, as men- 
tioned here below: the analogical proceeding (or instrumental): the analytical (or 
numerical) one and the proceeding with the radial triangulation method. 
Consequently, out of Commission IIT’s field of interest, six divisions are resulting. 
t gave 
terest. They can, however be grouped as suggested by modern technical tendencies, only 
IC Spe- by the following four sections: 
a) instrumental method aerial triangulation per strips 
specify b) instrumental method aerial triangulation per blocks 
¢) analytical aerial triangulation per simple strips and per blocks 
funda- 
be the d) radial aerial triangulation per simple strips and per blocks. 
The four above mentioned sections of specialization in Commission III's field 
of interest, might form the titles of as many sub-commissions formed within Commis-