440HZ Tuning Fork Virbration Experimental Instrument with Wood Resonator Box + Knockerd Tuning Fork

and practical: Comes with a wood hammer.Wood Resonator Box is made of solid wood.Has tuning 440 Hz fork and stick. Our tuning fork show Good processing and quality. Rational design:The edges and corners are neat and the is chrome plated.The frequency is 440 cycles per second.Two tuning forks of the same efficiency are made of the whole 45# carbon steel. Affordable:Include tow tuning fork tow wood resonator box and one knocker.The price is not expensive. School use:Good for school teaching tool.The tuning fork set is used to demonstrate the resonance of sound in school. Experiments use:Tuning Fork can be used as a general tuning fork of a variety of experiments, such as the sound of the occurrence, interference, sound condu great lab supplies.High quality physical experimental instrument .