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Jennings Matchbox vs. CD
Thu, 10/18/2007 - 03:14 — Pubworx
I was all set to buy the jennings matchbox 50x0.01g scale but then I noticed that the CD model has the same resolution but can read up to 100g. I wasnt able to find a review for the CD model. Or maybe there is another scale with 100th gram accuacy that I should look at? I could use some advice
Thank you for your reply.
Thank you for your reply. That Acculab Pocket Pro is pretty slick. The reason I ask about the matchbox and the CD is that they are both available a local retailer for under $50. However I would like to know if they truly are 0.01g scales throughout there range. Meaning if you were to put a 0.01g wieght on them would they measure that and do they see the difference between 49.99g and 50g? For the price they both seem like a deal but not if there big on novelty and short on quality.
That's a tricky question.
That's a tricky question. It totally depends on your use. If you read some of our articles you will see that if you place a 0.01g weight on a 0.01g scale it's difficult to know if the scale will register that weight or if it's auto-zero function will 'zero' that out.
On cheaper 0.01g scales it's pretty much guaranteed that the 0.01g won't read - the cheaper the digial scale is made the more they turn up the auto zero function to try and keep the displayed weight stable. So - on the Pocket Pro 0.01g digital scale for example it will likely show 0.01g if you put on that 0.01g weight. But on a cheap $20 0.01g digital scale it's unlikely that it will show that weight.
If you REALLY want to read to 0.01g though, you should get a digital scale that reads to 0.005g (double the display resolution then what you need is the rule of thumb in the weighing industry). There aren't so many digital pocket scales that read to 0.005g because you really need a wind cover at that resolution. There are larger scales that do it and there are some grain scales such as the JS-VG40 (40g x 0.005) but these are not $50 scales, probably closer the $75-100
If accuracy is not that important then go with the cheaper scale, you can always upgrade later to a better model!
I have a Jennings Compact
I have a Jennings Compact Disc scale here in the queue for further testing. It seems to work well but I really would go with something more like the Jennings JSV in a 100g x 0.01 due to it's better functional design.
If you want to show off to your friends that's one thing - but for a better weighing design the JSV is much better imo
Otherwise there is a new Acculab Pocket Pro 100g x 0.01 that seems to also work quite well on my bench.
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