Archaeological discoveries

How is a 20 inch gun measured?

The measurement of a 20 inch gun refers to the diameter of its barrel, specifically the bore diameter. In the context of artillery or naval guns, the caliber or bore diameter is typically measured in inches or millimeters. For a 20 inch gun, the measurement indicates that the internal diameter of the gun barrel is 20 inches.

It's important to note that the measurement of a gun's caliber or bore diameter does not directly correspond to the size or length of the entire weapon system. The overall length, weight, and other specifications of a gun can vary depending on factors such as the gun's design, purpose, and the platform it is mounted on (e.g., ship, tank, etc.).