Geometric inspection of complex parts is of great interest in industrial production. Coordinate measuring machines (CMM) are widely used because they are flexible and have a high accuracy. They are often used for inspection of prismatic parts and freeform surfaces. The CMMs are relatively slow and allow generating a certain number of points at the surfaces. Faster measurement can be achieved with non-contact optical measurement systems (OMS), 3D scanners. These measurement systems offer several advantages like fast acquisition of points at the surface of the part, high density of points, independence of measurement results from rigidity of part, fast and easy access to the surfaces of the complex part. Compared to coordinate measuring machines, these measurement systems are less accurate. Also, the procedures of accuracy test for non-contact measurement systems and shape of standards are not strictly defined. The aim of this paper is to present a comparative analysis of two 3D portable and handheld scanners based on laser triangulation. For this purpose, two calibrated artefacts were used and two test parts were designed. The result of this analysis can be used for the selection of an optimal measurement system for a specific measuring task.