A pass or fail check backed by measurements, such as confirming a balance reads within ±0.1 g at three test loads or that a CMM passes an interim check against an artifact. It usually covers fewer points than a full calibration and records a verdict rather than a full data set. Many labs run quick daily verifications between full calibrations to catch problems early.
Do a quick verification with the 100 gram weight before the shift, the full cal isn't due for four months.
Also heard as
- check
- verify
Do not mix it up with
- Calibration: Calibration establishes and records the relation between readings and standards with uncertainty; verification only confirms that requirements are met.
Related terms
Calibration
Comparing an instrument with a better-known standard and recording how its readings line up with the standard's values.
Adjustment
Changing an instrument so its readings move closer to the correct values, a step separate from calibration.
Check standard
A stable item measured regularly to confirm a measurement process still behaves as it did when characterized.
Tolerance
The allowed deviation from nominal that an item or instrument may show and still be accepted.