The present invention is a device for obtaining an electrical signal from a patient that corresponds to a meridian. One embodiment of the present invention comprises an ergonomically pistol grip device that reduces fatigue by the placement of the head and motor and other key components. Another embodiment of the invention is the location of a fan and sound-deadening foam to limit the noise and heat to which the user is exposed during operation of the probe. Embodiment is the isolation hood which contains a removable tip and ergonomically design to prevent user fatigue and comfort to the patient.
