Dear Sir,
I have just started in calibration field, So I am needing a little bit help regarding the reference /calibration standard.
Here I want to know that for example, I am checking the flatness/parallesim etc. of measuring jaws of a vernier caliper using dial gauge or some other tool and I have got some value then how I will come to know that this value is within the range or out.:) From where I will take the refernce value for comparing with actual value. Please guide me in detail.

Dear Sir,
I have just started in calibration field, So I am needing a little bit help regarding the reference /calibration standard.
Here I want to know that for example, I am checking the flatness/parallesim etc. of measuring jaws of a vernier caliper using dial gauge or some other tool and I have got some value then how I will come to know that this value is within the range or out.:) From where I will take the refernce value for comparing with actual value. Please guide me in detail.
Calibration of measuring equipment has to be performed strictly as per a documented procedure which jn tern should be in line with ISO Standard for calibration.
It cannot be treated as any other product mesurement.In house calibration is ok.Lab certification is not mandatory
V.J.Brahmaiah

Hello Rizy951,

I have seen some of your posts. You mention that you are new to calibration. That is OK, as we all started somewhere.

May I recommend obtaining some reference works and reading the applicable portions of them? One is the Metrology Handbook, published by the American Society for Quality (ASQ). Not sure of the cost but it is a good reference work.

Flatness can be easily checked with a calibrated linear item (e.g., ruler), where the edge is calibrated for flatness. Parallelism is a bit more complex.

I recommend that you get training in basic Metrology concepts. Some of the questions can easily be answered by obtaining appropriate training.

Hope this helps.