Measuring of the plastic deformation over short distances by non-destructive method is explored in this paper. PIDAC method (Predictive Instant Defect Analysis of Constructions) is based on exact indication of defined distance change between two micro tips made from hard metal, which resist to high temperature, corrosion and abrasion as well. Distance is mechanical imprinted into an indication specimen and measured by microscopy analysis. Example of experimental measurements on particular construction is also described in this paper.