According to the increasing interest in metrological systems for the dimensionalmeasurements of large-size objects in a wide range of industrial sectors, severalsolutions based on different technologies, working principles, architectures, andfunctionalities have recently been developed. Among all, the most flexible and easilytransportable solutions are those that have aroused most interest and have found greatersuccess. In order to address the needs of Large-Scale Metrology (LSM) applications, adistributed flexible system based on a network of low-cost InfraRed (IR) sensors – theMobile Spatial coordinate Measuring System II (MScMS-II) – has been developed at theIndustrial Quality and Metrology Laboratory of Politecnico di Torino. This paper presentsa preliminary uncertainty assessment of the system referring to the measured pointcoordinates in the 3D space, focusing on the sources of measurement uncertainty and therelated propagation laws. A preliminary metrological characterization of MScMS-IIarchitecture, experimentally evaluated through a system prototype, is also presented anddiscussed.
