very useful

Does as it should and shows me that my mft is as it should be.

MFT resistance confirmed.

Does the business

Once you know where you are with your test gear it gives you a lot of confidence your near the mark. A vintage AVO with a analogue display w

What every sparkx needs.

Perfect, does exactly as required for minimal outlay.

Good

Works as advertised

Works very well does exactly what is required

Quick and easy way to keep your tester in calibration. Saves that yearly expensive cost of calibration.

As discribed

Cheapest i could find online works well every time not sure what the taped on section on the back is for.

This card makes things much easier. If you get an odd reading you can check the equipment with the card and ensure its not the equipment pla

Easy to carry and confirm calibration

Just as described n good delivery

Really useful to check electrical meters before use and after, check of calibration.

Purchased as asked by my partner (electrician).nHe was very happy with the product and well impressed with delivery very quick. Wouldn’t hes

Does the job beautifully and takes up no space.

A simple and effective way to keep tracks of results on your tester

A great way of self testing my meters for reassuring accuracy.

If you’ve ever had a reading that makes you question the tester, then nothing is simpler than using this card. Handy to leave in your test k

Good build quality and endorsed by NICEIC. Easy to store in the instrument case. Easy to use, just place the instrument probes on the requir

Order dealt with very quickly. Kept informed when it was due. The product did exactly what it says on the tin.

basic, simple

used these cards for years found them to be very accurate ideal for onsite checks.Brought a new one as original one was stolen

This card is “so” useful, I wish I’d found it ages ago. The resistances are really very accurate, so it does exactly what it’s supposed to d