1. Positive Return Mechanism with Curved Triangle Gleichseitiges Bogendreieck in grader Schleife mit Polbahn Collection: Reuleaux Kinematic Mechanisms Collection Set: L. Positive Return Constant Breadth Cams Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt
2. Positive Return Cam Bogenscheibe in Bogenschleife Collection: Reuleaux Kinematic Mechanisms Collection Set: L. Positive Return Constant Breadth Cams Date: 1882 Format: Image Designer: Reuleaux, F. (Franz), 1829-1905 Manufacturer: Gustav Voigt Werkstatt