Meinl Tuning Fork Merkur TTF-ME
Meinl Tuning Fork Merkur TTF-ME, Tuning Fork, Planets series, Description: Duration of one orbit around the sun, Position of the sun: 1st planet, Orbital period in years: 0.24, Orbital period in days: 87.969, Orbital period in seconds: 7600522, Frequency calculation: 1/7600522 sec = 0.0000001316 Hz (0.0000001316 Hz x 2) 2 to the power of 29 = 141.27 Hz, Frequency: 141.27 Hz (30th octave), Tone: C#3, Shifted standard tuning 440 Hz: A4/a ' = 448.50 Hz, Made in Germany