I know the meter wasn't of the highest quality, but it's not even worth the price. I've used this meter twice in the 2 months I've had it and it shows a different resistance of up to 1.5 ohms just by touching the wires. I have an old set that fixes the problem but if they can't give you decent results then I can't trust the readings either. It's too late to return it, otherwise I would have done it.