This professional-grade adjustable set square combines precision engineering with versatile functionality. The 12-inch measuring tool features durable steel and brass construction, delivering exceptional accuracy for technical drafting and surveying applications. The instrument includes carefully calibrated measurement markings and smooth-operating parallel bars that maintain consistent alignment through precision-engineered pivot points. The balanced weight distribution and robust metal components ensure reliable performance and superior control during detailed work. A protective cover is included to keep your instrument secure during transport and storage. Perfect for architects, engineers, surveyors, and technical drawing professionals, this comprehensive tool provides the accuracy and reliability needed for precise measurements and layouts. The instrument's thoughtful design allows for smooth operation across various surfaces while maintaining exceptional precision. Whether you're working on architectural plans, technical drawings, or surveying projects, this high-quality measuring tool delivers consistent, accurate results for professional-grade work.