Caliber
Caliber is a term used to describe the internal diameter of a cylindrical object, most commonly the inside diameter of a gun barrel or firearm bore. It is typically measured in inches or millimeters.
In firearms, caliber indicates the diameter of the bullet or projectile that can be fired from the barrel (e.g., a .45 caliber means the barrel’s internal diameter is 0.45 inches).
In other contexts, such as engineering or piping, caliber can refer more generally to the diameter or thickness of tubes or cylindrical objects.
Key points:
Caliber = internal diameter of a barrel or tube
Measured in inches or millimeters
Important for firearm specifications and ammunition compatibility
Also used in engineering and manufacturing
Caliber is crucial for matching ammunition to firearms and for defining performance characteristics like velocity and accuracy.
Centiinch
A centiinch is a very small unit of length equal to one-hundredth of an inch (0.01 inch). It is not commonly used in everyday measurement but may appear in fields requiring precise fractional measurements based on the inch.
Key details:
1 centiinch = 0.01 inch
Equivalent to 0.254 millimeters
Used for fine measurements where inch subdivisions are preferred
Rare and mostly of specialized or historical interest
The centiinch allows for more detailed measurements within the inch system, similar to how centimeters subdivide a meter.
No conversions available for length.