system for checking accuracy

[GPack]

I have seen a card that allows you to check your multimeters accuracy on resistance measurements. Does anyone have a link to somewhere I can get one please?

 

[pennywise]

They are on ebay alot.

 

[GPack]

What are they called? What should I put in the search box?

 

[nickblake]

I use a check box Calibration Checkbox - Calibration Checkbox CCB1 - Calibration Checkboxes - Calibration Check Box CCB1 Elecsa do a cal card

 

[Amp David]

I use one of these Calibration Checkbox for checking Instrument calibration

 

[SirKit Breaker]

I got a Calcard from Elecsa. It is about the size of a credit card and 5 times thicker. I dont use it as an alternative to calibration, but it keeps in the lid of my Fluke MF tester carrycase. I just use it to confirm the kit is OK if i get a dodgy result.