MEDICAL GRADE TUNING FORKS The MDF 22 is a set of medical grade tuning forks instruments that operate at frequencies of 512, 256 and 128 Hz. If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.-Nikola Tesla Always On Key All MDF ...MEDICAL GRADE TUNING FORKS The MDF 22 is a set of medical grade tuning forks instruments that operate at frequencies of 512, 256 and 128 Hz. If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.-Nikola Tesla Always On Key All MDF tuning forks are engraved with their specific frequency to keep them clearly marked over years of use.
One Good Turn Our tuning forks are carefully crafted and include an extra long handle turned precisely to create a delicate balance. Color: Silver. Gender: male.