Calibration is the act of comparing a device under test (DUT) of an unknown value with a reference standard of a known value. … A logical next step that can occur in a calibration process may be to adjust, or true-up, the instrument to reduce measurement error. Technically, adjustment is a separate step from calibration.

Calibration is the process of configuring an instrument to provide a result for a sample within an acceptable range. … Although the exact procedure may vary from product to product, the calibration process generally involves using the instrument to test samples of one or more known values called “calibrators.”

A machine tool is a machine for shaping or machiningmetal or other rigid materials, usually by cutting, boring, grinding, shearing, or other forms of deformation. … Allmachine tools have some means of constraining the workpiece and provide a guided movement of the parts of the machine.