2.2.5.2 Use of Specially Built Stereometric Cameras 
While the projects mentioned in Section 2.2.5.1. used 
standard stereometric cameras, a number of other projects used 
special cameras specifically designed to meet the requirements 
of these projects. 
One of the fine examples in this connection is the stereo- 
metric camera developed in Poland and used extensively in pre- 
cise mine surveys (Kowalczyk, 1964). Another fine example is 
the Galileo-Santoni Tecnoster/B (Fig. 6) stereometric camera 
which was designed primarily for precision measurements of auto- 
mobile bodies. Of particular interest is the stereometric camera 
developed in Japan (Maruyasu and Oshima, 1966) for measurement 
of objects in motion. 
Unfortunately, the literature does not contain, to the 
best of the writer's knowledge, definite information about the 
accuracy obtainable by systems using these special cameras. 
2.2.5.3. Photogrammetric Considerations 
In using stereometric cameras for high precsion work, due 
consideration should be given to a number of items; most impor- 
tant of which are discussed below. 
2.2.5.3.1. Expected Accuracy of the System (refer to Fig.13) 
2.2.5.3.1.1. ''Planimetric'! Accuracy