A Wartenberg Wheel, Also Called A Wartenberg Pinwheel Or Wartenberg Neurowheel, Is A Medical Device For Neurological Use. It Was Originally Designed By Dr Robert Wartenberg To Test Nerve Reactions (Sensitivity) As It Rolled Systematically Across The Skin. A Wartenberg Wheel Is Generally Made Of Stainless Steel With A Handle Of Approximately Seven Inches In Length. The Wheel, Which Has Evenly Spaced Radiating Sharp Pins, Rotates Around As It Is Rolled Across The Flesh.