Check the listing for details. Spring Joint Caliper 4" Carbon Steel Spring Divider Caliper w Solid Nut Flat Leg. Condition: New. Listed at 15.44 USD. APPLICATION- A useful measurement transfer tool for measuring the internal size of round stock or irregular-shaped objects. Also great for scribing circles into metal, dividing lines, drawing arcs, line segments, geometry drafting, etc.FEATURES- Made of carbon steel with heat treatment, ensuring wear resistance, hardness and long service life.- The high-carbon steel legs are designed with hardened points, allowing for precise marking on workpieces, which can be easily adjusted through an adjusting nut, ensuring accurate measurements and fine adjustments.- With a smooth and burr-free surface, these calipers provide accurate measurements and maintain their functionality over extended periods of use without the risk of loosening.SPECIFICATIONOverall Size: 150x115mm / 5.9x4.