✔【PHYSICAL EXPERIMENTAL INSTRUMENT】---- physical experimental instrument, and practical.
✔【2 SAME EFFICIENCY TUNING FORKS】----Two tuning forks of the same efficiency are made of the whole 45# carbon steel.
✔【CHROME PLATED SURFACE】----The edges and corners are neat and the is chrome plated, the frequency is 440 cycles per second.
✔【DEMONSTRATE SOUND RESONANCE】----The tuning fork set is used to demonstrate the resonance of sound in school.
✔【USED FOR VARIETY OF EXPERIMENTS】----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.
