Apparatus or corresponding method for denoting a physical characteristic or issuing a signal related to winding, unwinding, tensioning, or guiding (e.g., a scale, dial, counter, or similar device conveying the length, tension, capacity or other condition of an elongated material or an element of a winding or unwinding device) or an instrument to give visual or audible notice of the occurrence of a selected winding, unwinding, tensioning, or guiding condition.
