How do you read zone numbers on a blueprint?

Zone numbers on a blueprint are typically read from right to left. This convention is often used in architectural and engineering drawings to facilitate the flow of information, especially when dealing with complex layouts. When you approach a blueprint, the zones may be organized in a manner that allows you to easily identify different areas or sections of the design, and reading right to left helps ensure that you're following the intended sequence established by the designer.

In many cases, this methodology aligns with how schematic diagrams and other engineering documents are interpreted, making it essential for professionals in the field to adhere to this standard practice to avoid confusion and maintain clarity in communication about the blueprint’s layout.