Kennedy: 12" Spring Type Inside Caliper-solid Nut Manufactured from high quality polished steel with ground finished points. A circular spring bow joins the legs and a fine adjusting screw is mounted across the legs and is used for setting the distance between the two points. MPN: 5036140060968 EAN: 5036140060968 12" Spring Type Inside Caliper-solid Nut Attributes: Measurement Range: 0 - 12in Measures: Internal System of Measurement: Imperial