Analytical photogrammetry is essentially a first step of automatization, and at the same time it aims at avoiding thoroughly the mistakes and errors made through the human organs which have the possibilities to be introduced into the raw materials of photogrammetry. Neverthless, they have chances to be introduced, in this case, through 1) the identification processes of the images of the points on the paired photographs which are carried out by the help of the pricking device (stereo-viewings), and 2) the measurements of photocoordinates of the points identified on the photographs (monocular-viewings). Mistakes and errors thus introduced through the two stages manifest themselves in the various stages of computing processes. And according as the computer points them out as unreasonable results, the states of measurements by stereo-viewings and monocular-viewings are inspected respectively. Then remeasurements and recomputations are repeated until the raw materials will be refined sufficiently. The character of mistakes and errors have been previously examined in details by the help of theories and practices, and the programs of the electronic computer are constructed in accordance with the above purpose. As a result, our method introduces the feed back process necessarily which is a essential feature of automation. In factories it is difficult to pay deep attentions for many and broad domains of works contineously flowing, as are not the case in laboratories, and this circumstance can only be compensated by resolving the works in simple jobs and by concentrated administration for the synthesis of their results. The analytical photogrammetry is a very example of such a case in the field of photogrammetry.

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