In the context of aluminum sheeting, "No. 8" refers to a specific thickness measurement. However, it is worth noting that instrumentation systems may vary from country to country or industry to industry. The gauge measurement indicates the thickness of the sheet, where a smaller gauge number indicates a thicker sheet.
In the United States, the standard specification system for aluminum panels is based on weight per square foot. In this system, the thickness of the 8 gauge aluminum plate is typically about 0.1285 inches or 3.26 mm. However, it is worth mentioning that thickness tolerances may vary slightly depending on specific manufacturing standards and processes.