/ˈkælɪˌbreɪts/
VERB
To determine or correct the accuracy of a measuring instrument or device by comparing its readings with an established standard.
Checks and adjusts measuring instruments or devices to ensure that their readings conform to an established standard.
VERB
To establish or mark the graduations on a measuring instrument so that its scale indicates specific measurement values.
Marks or establishes the divisions and graduations on a measuring instrument's scale to represent measurement values accurately.
VERB
To measure or determine the internal diameter or caliber of a tube, barrel, or gun.
Measures or determines the internal diameter or caliber of a cylindrical tube or firearm barrel.