It consists of a powdered coated of steel bar with specific dimensions (100 cm x 3.75 cm x 0.5 cm) and a series of holes drilled at equal intervals (every 5 cm). This bar can be suspended from a horizontal knife edge (wall bracket) through one of the drilled holes, allowing it to oscillate in a vertical plane. The system comes with a wall bracket and two moveable knife edges, enabling adjustments to the suspension point for different oscillation behavior.