Tuning fork with resonator box, long-lasting sound, ideal for science experiments on sound - Tuning fork and hard resonator box (with soft tapping rod)

This tuning fork comes with a hardwood resonator box. The sound lasts a long time, making it ideal for science experiments on sound. The tuning fork can be removed from the resonator box. A soft hammer is included. Frequency: 440 Hz, Length of tuning fork: 16.5 cm, Resonator box: 18 x 9 x 6 cm