The Dukal Corporation-7020 Wartenberg Pinwheel is a specialized neurological diagnostic instrument designed to evaluate sensory perception, pain response thresholds, and cutaneous nerve sensitivity. Measuring 7.5 inches in overall length, this classic diagnostic tool features a textured, ergonomic handle and a rotating, precision-machined steel wheel lined with evenly spaced, radiating sharp pins. As the wheel rolls smoothly across a patient's skin, it provides uniform, light-prick tactile stimulation to test superficial pain pathways and map peripheral nerve sensation loss, dermatome boundaries, and nerve lesion areas.