Diagnostic instrument tests both static and moving one and two point discrimination. Set includes two plastic disks, each containing a series of metal rods, spaced at varying intervals from 1mm to 25mm. Useful for measuring the innervation density of any surface area following nerve injury and repair, and for testing areas of skin before and after skin grafts. Also useful for home programmes as a sensory re-education tool. Fabric storage pouch and instructions included.