This is the worldwide first model of coupled pendula, which demonstrates the complete phenomenology of neutrino flavor-oscillations for 3 different neutrino species (flavors). Up until now, only models for just 2 flavors existed. The model is adjustable corresponding to variable neutrino mass differences and variable mixing parameters (PMNS angles) between the 3 flavors. Arbitrary oscillation patterns like those for solar neutrinos or atmospheric neutrinos can be simulated with any parameter settings (e.g. with the mixing angle 1-3 being zero or non-zero). Even the matter effect in the sun (MSW effect) can be simulated. The pendulum comes with an electronic USB readout which can display its movements in a scope-like manner on a PC or laptop. Drawings for building this pendulum and its readout are available from kobel@physik.tu-dresden.de . As of September 2011 copies of this pendulum have already been built e.g. in Bonn, DESY (Zeuthen), Münster, and Sussex