few measurements so that the objects can be preserved from 
immediate collapse and later on, where there are more possi- 
bilities. Therefore it is necessary to estimate the value of 
a photogrammetrical monument inventory according to the possi- 
bility how far an additional plotter can be used in exceptio- 
nal cases for important information on emergency interventions 
Such a plotter must be small, transportable and operatable 
without line-current. Also should it be easily operatable by 
semiskilled staff and be able to produce plots in form of 
plans, elevations, sections as the craftsmen are accustomed to 
use basic drawings. This will increase the practical value of 
photogrammetric archives in an unprecedented way. 
In all cases of natural catastrophies such as violent storms, 
settlements, seisms, but also catastrophies with artificial 
causes (accidents, traffic vibrations, caused by any kind of 
vehicle on land, sea and air, stationary machines, explosions, 
fire, etc.) all remains and altered parts of the objects must 
be surveyed as quickly and as completely as possible, even if 
nearly all such cases, secondary damage causes and consequen- 
tial damages (e.g. after shocks of an earthquake, consequen- 
tial damages after fire etc.) change or destroy parts of the 
first damage's remains. 
At non-visible loosening of the connections e.g. the walls, 
consequential damages may arise after first damage. Investi- 
gations basing on such records are very valuable as they can 
immediately be presented to the emergency intervention team. 
Specialists of building structures perceive mostly the expec- 
ted but not the actually real deformation of the structures; 
therefore they might shore on one side as it seems to be ad- 
vantageous for the expected deformation, but not for the 
accrued one. 
At causes due to consequential damage, the wrong shoring can 
be useless and will not prevent more damage or complete de- 
struction. The photogrammetry prevents such dangerous mista- 
kes of perception. Missions such as expeditions, crime-techni- 
cal and military missions for which photograms are desirable 
which were not practicable because of an aerial view obstacle 
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