In Reply to Parent Post by tknchancs
We calibrate/verify, in-house against Jo-blocks calibrated to a known standard, the micrometers and calipers used for Production and Inspection. I recently came across a digital micrometer that is off .005 on the barrel and the screen is not working (probably dead battery). Can we make the necessary adjustments in-house or should we send it out to a calibration service?
In other words, howdy, from a fellow Texan!
It depends on the reason the instrument is out of calibration. The parallelism may be off on the jaws. If so, it may be worth it to trash the instrument and replace them.
1. Assure the problem is not with the standard or the calibrator.
2. Try to determine what the problem is with the instrument. Most dimensional instruments (Mitutoyo, Starrett, etc.) don't usually get off, if they have demonstrated repeatability. But it does happens
Just write up the issue, assure that no significant impact has occurred, replace the instrument, and move on.