Otto is short for osteophonic, which means to vibrate the bones. These tuning forks have weights on the ends. When you tap these forks, they vibrate more than those that don’t have weights. The vibration is transferred to tissue and bone by placing the stem of the fork on the body.
The 64Hz fork is longer than the 128 Hz fork, and sounds an octave or 8 notes lower. It is also a C, and is in harmony with the frequency of the earth.
The 64 Hz fork is best used for being placed on the sacrum in the lower spine to balance the autonomic nervous system.
An activator is not necessary for this tuning fork. Because of it’s length, and the weighted ends, it’s best to tap it gently on the palm of your hand.
