Relation Between Uncertainty and Accuracy

Are they available from LynDoor Industries by mail-order? Thought so...

Yes, We certainly have them.

Unfortunately, we are currently out of accuracy and it is on backorder.

But we are overstocked on uncertainty and are running a three-for-one or two special on it.

Usual terms and conditions apply.

LynDoorIND.con

You should get your marketing department up to date, the term is BOGO

Nice link.

I'm not sure why someone marked it off topic. The link provides a very detailed answer to the OP's question.

Thanks, that's what I thought too.

We have some children here, who like to aggravate people if they disagree with them.

Good starting point. It might not fully explain why the metric was switched from a tolerance basis to a statistical basis. I wonder if the new statistical method includes human "observation" error or if it was based on sample and hold drifting?

Correct me if I'm wrong, but precision is about getting the right answer while accuracy is about consistancy. Does that sound right?

I think it's the other way round.

Accuracy means getting as close as possible to the correct quality one is measuring and precision is the ability to get the same answer each time you measure the same thing in the same way.

Ah, yes! Reading from your link above does reinforce your statement. Thank you for that. I hope I'm not the first to get that backwards!

Good answer, it is very interesting, it changed a bit the idea of repeatability VS. precision that I've had for years. I saved a copy of the .pdf for the calibration lab. technician and for myself.

Thanks

A calibration report should show an uncertainty for each measurement. Confidence level is the number of sigma variation in the uncertainty (usually 2 is acceptible). The uncertainty is the accuracy of the measurement. If you don't know what sigma or uncertainty means, then you need to go back to school. If your calibration lab didn't give an uncertainty, then find another lab, or get a higher priced report. Talk to them about what their report means.