T-Squares

T-squares are drafting tools used to draw straight, precise horizontal lines on a drafting table or other flat surfaces. They consist of a long, straight blade attached perpendicularly to a shorter, straight-edged head (or stock) that rests against the edge of the table for stability. T-squares are essential for architects, engineers, and artists working on technical drawings, plans, or blueprints. They come in various sizes and materials, such as wood, plastic, or aluminum.