Which type of line is used to show dimensions on an aircraft drawing?

In aircraft drawings, dimensions are clearly indicated using solid narrow lines with breaks. This style of line serves an important function, as it allows the viewer to distinguish the dimension lines from other types of lines in the drawing, such as object lines or hidden lines. The breaks in these lines further enhance clarity by indicating where the dimension reference starts and ends, ensuring that the overall design is easily interpretable.

Using solid narrow lines is standard in engineering and technical drawings, providing a clear and direct way to communicate important measurements without cluttering the design. This is particularly crucial in aviation, where precision in dimensions can impact the performance and safety of the aircraft. It is essential for technicians and engineers to quickly and accurately interpret this information, thus understanding the significance of the solid narrow lines with breaks in representing dimensions is vital for effective communication in aircraft design and maintenance.