This paper presents the process of calibration of a testing station for rocket engines, which was made at Fundacion Universitaria Los Libertadores by members of the Grupo de Investigaciones en Ciencias Aeroespaciales (GICA). The purpose of this is to use the testing station in future experiments with rocket motors for the Libertador I rocket, in order to complete the initial purpose of this group; to construct a rocket capable of taking atmospheric data from troposphere and stratosphere.