Used for constructing a vibrating-reed frequency meter, metal reeds of various lengths mounted on 4-mm pin plugs, for resonating at 11, 15, 21, 36 and 50 Hz, 40-90 mm in length
Experiment(e) – aus der Versuchsanleitung P9102-5A Akustik, Schwingungen und Wellen, Demo (DEU)