A total angle ruler (200 mm) is a compact, precision measuring tool designed for accurate angle and linear measurements in drafting, woodworking, metalworking, engineering, and construction tasks. With a 200 mm (20 cm) scale, it typically features clear metric markings, a pivoting arm to measure or set angles, and a sturdy, easy-to-read design for reliable use. Lightweight yet durable, this tool helps users measure, lay out, and transfer angles and straight lines with speed and precision.