[en] This work develop an approach of an industrial gammagraphy system using a Cs₁₃₇ low activity source and a medical radiograph film in place of a specific gammagraphy film, which was commonly employed in this application. The reason for this is simplifications in the film processing, now using an automatic machine, dispensing the processing through a bath tank, as usually in gammagraphy. The employment of a low activity source allow the gammagraphy in laboratory by a simple geometry. Three different exposure times are tested in the same geometry, resulting in three different radiography qualities. This development is a non-invasive method, reliable in small objects in this way, for applications in the field of quality control. Low cost processing is able due to the use of a low activity source in place of conventional X-ray tube. This arrangement allows that graduation students of one Radiology discipline realize this experiment in laboratory. (author)