Carbon steel construction with a hardened tip for long life Durable carbon steel material with a temperature quenching hardened tip for increased hardness and long service life. Accurate and reliable operation Total length about 150 mm with a flat leg design for precise marking and measuring. Provides accurate, reliable operation for layout and layout tasks. Easy to use and stable Stable and responsive spring mechanism enables quick, effortless adjustments. Sturdy construction ensures stability during use. Versatile and compact Suitable for drawing arcs and circles, dividing gauges, dividers, line segments, size measurements, and more. Compact and practical for everyday use in various settings. Specifications Material: carbon steel Length: about 150 mm Tip treatment: temperature quenching for hardness Functions: arcs, circles, dividing gauges, dividers, line segments, size measurements Use scenarios Metal fabrication and layout: mark precise arcs and circles on metal sheets or plates for fabrication, cutting, and drilling templates. Woodworking and pattern creation: lay out circles, arcs, and lines on wood for patterns, joints, and framework. Mechanical drawing and layout: create accurate circles, arcs, and subdivision marks for parts, gauges, and measurement workflows.