for a structural specimen under test conditions is influenced, 
to a great extent, by the disposition of the test floor in the 
laboratory. |n most cases, elaborate arrangements for measure- 
ment cannot be accomodated because of possible interference 
with other operations in the immediate neighborhood of the test 
area. Heavy and volumunous cameras cannot be used very well in 
connection with deformation measurements on structural models 
under test conditions. 
2) 
acquisition in connection with deformation measurements, partic- 
Stereometric cameras are especially well suited for data 
ularly under dynamic loading. Among the attractive features of 
such cameras are their simplicity and portability, the possi- 
bility of simultaneous exposures, and the ability to record a 
situation in a very short time (shutter speed settings of 1 to 
1/500 second are available in most stereometric cameras). Stereo- 
metric cameras are, in general, compact instruments and this 
fact in itself is an important factor in as much as no elabo- 
rate arrangements on the test floor are required. |n the stereo- 
metric approaches, one or more stereometric camera(s) is used 
for data acquisition. 
Most of the stereometric cameras currently commercially 
available were specifically designed for traffic accident 
investigations (base length: 120 cm) and crimonology inves- 
tigations (base length: 40 cm). The use of such cameras has 
extended over the years to a wide variety of fields involving 
medium and low measurement precision requirements such as 
archeology, architecture, animal husbandry, etc., just to name 
  
2) Stereometric cameras are essentially composed of two 
cameras (metric chambers) rigidly mounted to a base of definite 
length.