From The Esoteric, Volume 3, Number 12, Advertising page at the front of the issue. There is no explanation how this device worked. At a guess, it appears as if the balance arm was placed in front of an individual’s lips and they blew on it.
From The Esoteric, Volume 3, Number 12, Advertising page at the front of the issue. There is no explanation how this device worked. At a guess, it appears as if the balance arm was placed in front of an individual’s lips and they blew on it.