Original Geissler - Medical instrument - Type A - Wood, Metal, Glass - Electro-Oscillator 1925

The Original Geissler Electro-Oscillator Type A from 1925 is a fascinating piece of early 20th-century medical instrumentation. Devices like this were part of an era exploring electrical therapies, relying on oscillating electric currents believed to stimulate the body's functions. Constructed from wood, metal, and glass, it reflects the period's blend of craftsmanship and emerging technology. Electro-oscillators were used in electrotherapy clinics and sometimes at home, embodying the scientific curiosity about electricity's medical applications. Though obsolete today, such instruments hold significant historical value, illustrating the evolution of medical devices and the intersection of medicine and technology in the interwar years.