Bearing-Grade Smooth Rotation: This precision circle maker features a metal bearing and dual-ruler linkage design, ensuring lag-free rotation. Effortlessly draws smooth lines from small arcs to large circles, eliminating wavy edges of manual circle drawing. Made of high-quality aluminum alloy, it's durable for long-term use in woodworking and technical drawing. Ideal as a compass geometry tool for precise marking. 2-in-1 Multifunctional Design: This woodworking compass doubles as an equidistant scribe tool, meeting both circle-making and equal-distance marking needs. No need to carry multiple tools, saving space and improving work efficiency. Perfect for carpenters, designers, and students who require versatile measuring tools for various projects. Millimeter-Level Precision & Portable Size: Equipped with clear millimeter-scale markings, this circle compass enables fine and accurate measurements (radius 1.3-14cm). Compact size allows you to carry it in your pocket, convenient for on-the-go use in workshops, classrooms, offices, and homes. A must-have portable compass for on-site work and daily drawing. User-Friendly Operation: The locking radius slider can be adjusted with a light push of a finger, ensuring stable and precise measurements during use. One-finger holding design keeps the compass firmly in place while drawing, making circle making simple and labor-saving. Suitable for both professionals and beginners, solving the trouble of tedious and inaccurate manual drawing. Wide Application Range: This versatile compass geometry tool is ideal for artists, designers, architects, engineers, students, and carpenters. Suitable for woodworking decoration, engineering drawing, geometric learning, and daily marking tasks. Applicable in classrooms, schools, offices, workshops, and homes, meeting diverse drawing and marking needs.