NSN Lookup


A tool used to quickly determine the size number of wire, drill rod and/or for gaging the thickness of plates and sheets according to a wire number standard. Because of different standards for wire (e.g., nonferrous, stubs, American, Imperial, music, etc.), diameters of identical sizes differ in number size according to standards used. It may be a rectangular plate or disk slotted with gaging sections around the periphery for measuring thickness of sheets and plates.