uxcell Spring Joint Caliper Steel Spring Divider Caliper with Brass Fulcrum for Metalworking Shape Drawing Woodworking Flat Legs 300 mm Size - Spring joint caliper with a length of 350 mm x width of 310 mm, and a maximum opening length (capacity) of 300 mm. Material - Our flat leg divider calipers are forged from stainless iron and are heat-treated throughout, making them wear-resistant and long-lasting. Features - The forged high-carbon steel legs have hardened points for precise marking on workpieces, and precise fine adjustments can be made by opening and closing the legs with the adjustment nut. Application - Spring dividers are convenient measuring transfer tools for measuring the inner dimensions of round materials and irregular shapes. They are also ideal for drawing circles on metal, dividing lines, arcs, line segments, geometric drafting, and more. Usage - Smooth surface and no burrs, allowing for accurate measurements, can be used for a long time, and are not easily loosened.