How is a centerline represented in engineering drawings?

In engineering drawings, a centerline is represented by alternating long and short dashes. This specific line style clearly indicates an axis of symmetry or a path that represents the center of an object. Centerlines are crucial in technical drawings as they help to define features such as holes, shafts, and symmetrical parts, ensuring accurate interpretation and manufacturing.

The use of alternating long and short dashes makes centerlines distinguishable from other types of lines, such as solid lines (which typically represent visible edges) or dashed lines (which often indicate hidden edges). This unique representation helps in conveying critical information about the design and layout of components within a drawing, enhancing the clarity and effectiveness of the communication between engineers, designers, and manufacturers.