material and construction: made from medium carbon steel with hardened points for precise marking of the work piece. Strong, durable, and built to handle demanding projects. Easy to draw and adjust: lockable calipers compass enables repeat measurements and drawing circles and arches without slipping or losing control. Quick and accurate adjustment: the adjusting spring uses a selfseating washer and nut for fast, positive changes and reliable performance. Versatile workshop tool: suitable for measuring, scoring, and craft applications. Reliable for layout work in metalworking, woodworking, and other precision tasks. Use scenarios: Marking circles or arcs on metal, wood, or plastic for drilling, cutting, or assembly. Reproducing consistent measurements across multiple parts in a project. Scribing layout lines and arcs during general workshop and craft work. Key attributes: function as a wing divider and compass, material is medium carbon steel, hardened points for durability and precision, designed for reliable performance in workshop settings.