A T-square is a tool commonly used in drafting and technical drawing. It consists of a long, straight edge with a shorter perpendicular bar at one end, resembling the letter "T." This design allows users to draw precise horizontal lines and helps ensure that angles are accurate. It's especially useful for architects and engineers when creating blueprints or plans. In addition to its practical applications, the T-square is often associated with the Freemasons, who use it as a symbol of morality and virtue. The tool represents the importance of living a balanced life and adhering to ethical principles in both personal and professional endeavors.