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I bought 175 g pack of salami which had 162 g of salami as well.

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[-] skeeter_dave@sh.itjust.works 160 points 10 months ago

Sup, I'm your local friendly USDA contractor who very much uses scales everyday. Consumer grade kitchen scales are terrible and will lie to you. The fact that it does not go out to the tenths or hundredths is a big flag for accuracy.

We check test our scales twice a year to make sure they are accurate. I once tried check testing my kitchen scale I use for canning for giggles and it failed miserably. It would only register weight on 2 out of 4 quadrants until I got to 10g or so. I'm sure my ohaus is going to show a different and more accurate result if I where to try it.

[-] books@lemmy.world 24 points 10 months ago

Eight grams off? That seems rather significant. I mean we use to buy 20 grams of weed we'd know if it was almost half shy.

[-] chimasterflex@lemmy.world 48 points 10 months ago

8g sure but this is only within 2% error. most scales would probably be within 3% so this isn't surprising

[-] johannesvanderwhales@lemmy.world 10 points 10 months ago

You would presumably use a higher precision scale for that purpose. I know my kitchen has a large scale that's only 1 g precision but can go up to 8 kg, and one that's .01g precision but only goes up to 500g.

[-] bluewing@lemm.ee 6 points 10 months ago

Unless you were using a certified scale and checking it with certified check weights every time you used it, you were just guessing and hoping your dealer wasn't randomly or purposely off. And density of the material weighed matters also. Weed is far less dense than pasta so a discrepancy can be more noticeable since it takes a larger volume of weed to reach a particular weight than pasta does.

Understand that a digital kitchen scale is made with the cheapest load sensors a manufacturer is willing to pay for. Nor do they come with any kind of traceable certification as to accuracy class. In fact you get no guarantee that your shiny new kitchen scale is fit for even that purpose - just that it turns on, lights up, and displays something when you place a load upon it.

Accuracy is a cruel and VERY expensive mistress to chase. And most people don't understand it anyway.

[-] reverendsteveii@lemm.ee 4 points 10 months ago

that's why you don't use a scale that's only accurate to the full gram (and barely that) when dealing with something where the cost is such that a missing half gram actually makes a difference.

[-] SocialMediaRefugee@lemmy.world 2 points 10 months ago

Well you were high so we can't be sure about those numbers

[-] books@lemmy.world 4 points 10 months ago

I wasnt at the time but twenty minutes later, sure

[-] invisiblegorilla@sh.itjust.works 1 points 4 months ago

Dealers digital scales have 2 decimal places.

[-] Neon@lemmy.world 22 points 10 months ago* (last edited 10 months ago)

please actually do it. Not for any real Reason but just because it's funny to use professional equipment to weigh Pasta

[-] bluewing@lemm.ee 3 points 10 months ago

Now, I agree with you that if you believe a home kitchen scale is telling the truth, you are a fool. But as an old toolmaker who dabbled in accuracy for a living, displayed digits does not equal accuracy nor even repeatability. And there can be a fair amount of interpretation involved in analog beam scales.

I think it's just another PPS, (piss poor scale), scale that is neither accurate nor repeatable. And the packaging material weights are rarely included in listed weights. Since packaging can change at any time due to costs.

this post was submitted on 06 Feb 2024
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