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The nominal internal diameter of a pipe. In contrast, the outside diameter is specified for brass and copper tubing and for brass and copper pipe of other than iron-pipe sizes.
References in classic literature ?
The result was pitiful, and the four showed their caliber in the division of the few pounds of food that had been recovered.
50 BMG caliber, any other variant of 50 caliber, or any metric equivalent of such calibers.
As for calibers used by "sniper rifles," One Shot, One Kill includes the .
Our Center for Education in Nanoscience and Nanotechnology will be well served by its Veeco Calibers.