Youthink 440HZ Tuning Fork Virbration Experimental Instrument with Wood Resonator Box & Knocker

FOR EXPERIMENTATION This Tuning Fork can be used as a general tuning fork of a variety of experiments, such as the sound of the occurrence, interference, sound conduction of various substances. Two tuning forks of the same efficiency are made of the whole 45 carbon steel. DEEP RELAXATION: Tuning Fork.Fork sound restores the body s abdominal balance and maintains the of the organs, just take a tuning fork and place the vibrating fork near and gently tap The Tuning Fork Set Is Used To Demonstrate The Resonance Of Sound In School. High quality physical experimental instrument, and practical. See more product details FOR EXPERIMENTATION This Tuning Fork can be used as a general tuning fork of a variety of experiments, such as the sound of the occurrence, interference, sound conduction of various substances. Two tuning forks of the same efficiency are made of the whole 45 carbon steel. DEEP RELAXATION: Tuning Fork.Fork sound restores the body s abdominal balance and maintains the of the organs, just take a tuning fork and place the vibrating fork near and gently tap The Tuning Fork Set Is Used To Demonstrate The Resonance Of Sound In School. High quality physical experimental instrument, and practical. See more product details