There is a reason it looks like PVC piping and couplings...
it is pvc piping and couplings!
Add six inexpensive plastic lenses and scan the patient's spine while rubbing the back of the device. The healers fingers will stick or squeak when it is passed over the area of neurological disturbance (nerve stress) which the inventor claims will emit a greater amount of radiation - which will cause the "squeak" . This was patented in 1971, No. 3,626,930, and was outlawed by the FDA as completely worthless in 1984. Photo by B. Gaukel and J.J. Gaukel.
See Abrams-like Devices are Toftness Like Devices and Rubbing Plates; Toftness Radiation Detector by George J. Magner, III; and Chirobase: A Skeptical Guide to Chiropractic History, Theories, and Current Practices by Stephen Barrett, M.D., William T. Jarvis, Ph.D., and Charles E. DuVall Jr., D.C. which includes The Nervo-Scope (neuroclometers).
Museum of Questionable Medical Devices