Example Calibration Certificate

Many ask how long a calibration is good for.  In all reality it depends on how often it is used. Many companies require checking

The gage to the standard at the beginning of a work shift confirming the gage is reading correctly, while they are taking sixty or more

 measurements a day while in production of their material which will show changes to the repeatability of the standard in a shorter amount of time as compared to a person checking the standard five or six times a year.