Abstract: The pinwheel testing device described herein comprises a disk with sharp points or pins projecting outwardly from the circumference of the disk. This disk is rotatably mounted on a handle so that the sharp points of the disk device can be rolled on a patient's body part to test reaction to pain and sensitivity. Since there sometimes is a puncturing of the skin in the test area, there is great concern about the spread of HIV virus and other blood borne diseases, such as hepatitis, slow-virus, etc. Present instruments used for this purpose are made of stainless steel and, since they cannot be discarded, present a problem to keep them sterile. The design of the pinwheel device described herein makes it possible to make this unit out of plastic and therefore disposable. The manufacture of this device also permits structural advantages not available when such a device is made of metal.