This professional-grade measuring instrument set combines precision and versatility for technical drafting and surveying applications. The 12-inch triangular ruler features durable steel and brass construction with carefully engineered pivot points, ensuring consistent accuracy in technical measurements. The set includes an adjustable set square and a brass divider with stainless steel points for precise layouts. Clear measurement markings and smooth-operating parallel bars provide superior control during detailed work. The balanced weight distribution and robust metal components maintain perfect alignment through extended use. A protective navy blue cover keeps your instruments secure during transport and storage. Ideal for architects, engineers, surveyors, and technical drawing professionals, this comprehensive tool delivers reliable performance for precise measurements and layouts. Whether working on architectural plans, technical drawings, or surveying projects, this high-quality measuring set provides the accuracy and dependability needed for professional-grade work. The thoughtful design allows for smooth operation across various surfaces while maintaining exceptional precision.