Models Reducer cylindrical -simple 16 152 2 Weighing module by T.Pachcinski 3 20 2 Liebherr 984 Excavator (Autodesk Inventor ) 33 548 0 Excavator bucket 14 287 1 Superleggera III - OZ Racing wheel 22 154 1 fork 7 377 0 Education University of Technology in Poznan Eng.