pleximeter
/plɛkˈsɪmɪtə/Medicine. Now rare (chiefly historical )
noun
The object or device (originally a small ivory or bone plate, now usually the examiner's finger) interposed between the patient's body and the plexor in the diagnostic technique of mediate percussion.
Origin
Early 19th century; earliest use found in The Lancet. From Hellenistic Greek πλῆξις stroke, percussion + -meter, after French plessimètre plessimeter.