The Baseline Fold-Up Monofilament evaluator is used to measure cutaneous sensory perception threshold. The monofilament test provides a non-invasive evaluation with objective and repeatable results. Each monofilament represents a unique amount of force which is marked by force and size. These monofilaments feature an easy to fold nylon filament for protection as well as easy storage and portability. This 20-piece set includes all the cutaneous sensation levels 1.65 through 6.65. Sets are shipped and stored in a soft-shell protective carrying case.