For the correct operation of the rotary kiln it is necessary to ensure that basic geometric conditions are fulfilled. For regular check the geodetic measurements are used. Based on the developments in survey technology, the geodetic total stations (TS) and terrestrial laser scanning method (TLS) are used. TLS method was used for an investigation of the longitudinal axis of the rotary kiln (RK), axes of the carrier tires, and mainly the kiln shell deformation during its shutdown. The results of the experimental use of the TLS method to obtain ovality ratio of the shell of the rotary kiln are presented in this article.