neurometer
/njʊəˈrɒmɪtə/ /njʊˈrɒmɪtə/noun
Any of various devices used to measure electrical activity in or deliver electrical currents to the skin; especially (a) Acupuncture a device used to locate points of increased electrical sensitivity; (b) Medicine a device used to measure current perception, especially in the diagnosis of peripheral neuropathy (a trademark in the U.S.).
Origin
Early 19th century (in an earlier sense). From neuro- + -meter.