The construction and the principle of operation of an instrument introduced to the measurement of the dynamic dislocations of solid body surfaces are presented in the study. The phenomenon of speckling of laser light scattered through the rough surface was utilized. A speckle pattern was recorded by using a digitally-controlled diode matrix. Many configurations of optical arrangements for generating patterns and for mapping them into the detector plane were tested. The developed instrument can measure all components of linear and angular dislocations. The best efficiency was obtained in the measurements of the transverse component of dislocation. The range and ratio of measurement are strongly dependent on the laser light power and on the quality of the photoelement used.