me 
ria 
Ys 
ng 
or 
con 
ur 
for 
due 
est, 
ects 
It 
racy: 
e 
le cycle of operations. 
The problem of industrial photogrammetry, as far as rea- 
ding out of points is concerned, can be solved either analogi 
cally or analytically. The merely analogical method does not 
allow close tolerances; better results can be obtained apply- 
ing numerical methodology to proper analogical instruments. 
Recently, informatics and photogrammetry have reached a 
hing degree of interaction. 
The analytical solution of the problem presents a number 
of advantages, one of which is that the data obtained can be 
used for different purposes and read out any time (the latter 
property being common to the whole photogrammetrical method). 
The landscape being rather wide, we focused our attention 
on the specific problem of the survey of car body components 
(item b, medium-size objects) in order to verify the degree of 
"accuracy" obtainable with the cameras and plotting methods 
presently available. 
Surveys have been carried out of both vertically and hori 
zontal ly positioned objects. 
Besides, our research covered the following experiments: 
survey of a parabolic aerial, to detect surface distorsion; 
survey of a crane, collapsed in a building yard, to side jur} 
dical inquiry; survey of steel beams to study yeald point. 
A first major problem is that of cameras; it is widely 
dnown that unfortunately only some of the few cameras availa- 
ble for close range photogrammetry can be utilized for indu- 
strial photogrammetry, where exposure distance should not ex- 
ceed 2 meters. 
In our research we experienced a few of the cameras pre- 
sently available in Europe: 
1) first we tried the old FTG2 camera (Officine Galileo), with 
focal length f = 200 mm, plate size of 13x18 properly sui- 
ted to close range (focusing distance of 1.8 meter): the