Consisting of two rotating, plastic disks that are joined together. Tests static and moving two point discrimination of fingers, toes or sensory flaps. Ideal for testing following nerve repair, grafts and innervated tissue transfer for desensitisation or to deter the level of impairment. Rounded tips are spaced at standard testing intervals from 1 to 15mm apart. A 20 and 25mm spacing are also given. Includes instructions and a protective carry case.