A visual distance nerve measuring electrode wire used to measure the length of electrical conduction of a nerve. The device includes a single flexible wire surrounded by an outer insulating sheath longitudinally aligned and surrounding the wire. An recording electrode is attached to one end of the wire and a plug connector that attaches to a suitable recording device is attached to opposite end of the wire. Formed on the insulating sheath are a plurality of small visual distance indicators formed on the wire at known distances and integrals. During use, the physician is able to accurate map the path of a nerve and determine the conductivity of the nerve at different points.
