Most of the natural and engineering objects undergo physical and chemical transformation processes which cause their cracking and displacement. Due to that there is a need for monitoring the use of proper control-measuring devices. In this paper, authors presented the concept of displacement measurements using a measuring system, consisting of a geodetic instrument coupled with a table micrometer and double signals target plate, fixed on the examined object. Test set can be used to monitor the relative displacements and strains: eg. blocks and monadnocks, in the corridors of the caves and in the mine galleries, galleries dams, locks or watergates, etc. The proposed concept of measurement methods and instrumentation, with a micrometric table and double signals target plate, can support already known (classical) as well as modern automated solutions.

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