Nerv-O-Meter
The Nerv-O-Meter was one of many devices that had doubful scientific therapeutic validity and benifit. It was employed by early chiropractors in the 1960's. B. J. Palmer, the owner of a private school that "manufactured" chiropractors in the 1920s, introduced all sorts of diagnostic devices for tissue damage. circa 1960.
Click Here for additional information on this artifact.