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Manual stimulators designed to determine tactile sensibility by patient discrimination of the diameter of rods mounted on a disc. These devices consist of a handheld disc at the distal end with protruding rods that differ in diameter mounted on a rotary pin; the disc is manually rotated on the patient skin by moving an integral handle at the proximal end. Pinwheels are simple devices typically used in physician offices to detect peripheral neuropathy and/or in the diagnosis of diabetes or leprosy.
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