[volt-nuts] HP 3457A

[Charles Steinmetz]

I wrote:

>>Owning standards and instruments with traceable calibrations is 
>>necessary but not sufficient for making traceable calibrations with 
>>them.  For a calibration to be traceable, the lab that did the 
>>calibration must be accredited.

David responded:

>[Lab] is NIST tracable and acredited. I would not trust them to 
>calibrate a 3.5 digit DVM! There are a number of things I have seen 
>cal certificates from them, which I don't believe they can calibrate.

Good point.  I did not mean to suggest that being traceable and 
accredited necessarily makes a calibration lab good at what it does, 
or instills upright business ethics.

Best regards,

Charles