[helg]

Following discussions at this thread (http://thehighroad.org/showthread.php?t=448313), I have prepared a set of weights from 2 to 300 grains,

http://thehighroad.org/attachment.php?attachmentid=97718&stc=1&d=1241810195

then weighted it on my scale (from ebay, under $30 shipped)

http://thehighroad.org/attachment.php?attachmentid=97719&stc=1&d=1241810301"]http://thehighroad.org/attachment.php?attachmentid=97719&stc=1&d=1241810301

and packed all to a box. Tweezers are included. Die is not.
http://thehighroad.org/attachment.php?attachmentid=97720&stc=1&d=1241810310http://thehighroad.org/attachment.php?attachmentid=97721&stc=1&d=1241810316

My scale gives the following weights, in grains.

1 Small primer cup 2.16
2 Large primer cup 2.68
3 .177 BB copper pellet (flattened) 5.14
4 177 airgun lead pellet 7.68
5 .22lr shell (Rem) 9.80
6 10-24 nut 21.74
7 M6 nut 34.24
8 9mm brass (Blazer) 60.48
9 40S&W brass (S&B) 70.12
10 45ACP brass (A-Merc) 95.98
11 Hex wrench, white 118.30
12 Hex wrench, Black 149.54
13 M8 bolt 183.76
14 M10 nut 154.24
15 3/8" bolt 201.88
16 M8 bolt with nut and washer 301.12

I am mailing the box to yaheh. When he receives the box we should have here two sets of measures.

If you want to check the weights on your scale, PM your mailing address to yaheh or whoever gets the box afterwards, and put a note to this thread. You need post the results here and mail the box to whoever next PMs you the address.

[SquirrelNuts]

Good idea. Much better than mailing the scale. I will be anxiously awaiting the results!

[gvnwst]

My scale is coming in the mail soon (a hornady digital) and i would love to try it. When it arrives, i will probably do this, thanks!

[rcmodel]

then weighted it on my scale (from ebay, under $30 shipped)

How does this prove your NEVA scale is right?

Or anyone else's scale is wrong?

Seems like a Certified Check Weight set would be the only thing to use.

rc

[kelbro]

How does this prove your NEVA scale is right?

Or anyone else's scale is wrong?

Seems like a Certified Check Weight set would be the only thing to use.

rc
__________________
I think I'm suffering from Electile Dysfunction.
I couldn't get aroused over either candidate.

Exactly. Just like having flyers INTO your .25" group :)

There's a reason that they call them standards.

[Otto]

How does this prove your NEVA scale is right?

It doesn't. The OP is simply providing the results of his scale for others to weigh and compare.

IMO, using a Lyman check weight set would be far more accurate and entail a lot less hassle. Perhaps I'm old fashioned.

[rdhood]

It doesn't. The OP is simply providing the results of his scale for others to weigh and compare.

I am still not sure the purpose. Wouldn't it be far easier to take some standard weights of measure... or coins... or other items of a known accurate weight and calibrate or measure your scale's accuracy? Two 50g weights came with my scales, and are used to calibrate the scale. If I doubted their accuracy, I could take a newly minted coin... like a U.S. gold or silver coin, and measure it. I believe that the results would be far more telling than a comparison with the OP's scale. So again... what's the point?

[floydster]

I'm still using my Redding 56 year old beam scale, on the nuts accurate.
What more do you want.:)

[Otto]

I am still not sure the purpose... So again... what's the point?

Others have asserted that there isn't a digital scale worth buying that sells for less than $50.
The OP is trying to refute this by offering to mail the samples that he weighed on his $15 digital scale to anyone that is interested.

[Walkalong]

I checked my scale with check weights, and it is d*** close. It will also repeat its self, so I figure it's good to go.

Once I find a charge that will shoot through one hole (if I do my part), I actually don't really care if it is 5.3 or 5.4 or 5.6 Grains. I do know that my scale will repeat its self, and now that I know that 5.4 Grs of XYZ powder (on my scale) with ABC bullet will shoot lights out, that's all I really care about.

That is just one more reason to start low and work up. My 5.4 might be 5.7 at your house, or 5.3 for that matter, or 5.5 at my house when the A/C is blowing :banghead:, although I do shield my scale, and only weigh when the fan is off, and I hold my mouth just right, and cross my fingers, while holding my breath. :D

The man with two watches never knows what time it is. :evil:

[jcwit]

Walkalong, that is one of the best explanations of how to use a scale I have ever heard. If its off a little and you always use the same scale and the amount of it being off is always the same it makes no difference.

Repeatability is where its all at.

All of this within reason of course.

[smokey262]

To see what this is about you must follow the link the OP included in his post. Its actually an interesting experiment that I will like to see the results from.

[ants]

10 45ACP brass (A-Merc) 95.98Doesn't prove a thing -- an A-Merc case will weigh something different every time you weigh it.:p:neener::D

[1858]

IMO, using a Lyman check weight set would be far more accurate and entail a lot less hassle. Perhaps I'm old fashioned.

I made a post about this very thing a few months back.

http://www.thehighroad.org/showthread.php?t=433321

:)

[Cajun CB]

I took a couple of 22 cases and ground them down to 4.1 and 4.7 grains. I keep them in a small drilled hold with the flange out on my powder measure. I load 9MM with Universal in this range.

From time to time I put them on the scale to gain confidence in the scale.

Since I weighed them on the scale to start with, this is nothing to say that this is the super accurate weight. I only want to know if the scale has drifted.

[lgbloader]

5.4 Grs of XYZ powder (on my scale) with ABC bullet

And I thought I was the only one who knew about this recipe.

I do shield my scale, and only weigh when the fan is off, and I hold my mouth just right, and cross my fingers, while holding my breath.


Hey... I do that too.

The man with two watches never knows what time it is.

Walkalong, it's 5 o'clock somewhere....

Cheers Mate.

LGB

[Walkalong]

Yep, gotta be 5:00 o'clock somewhere. :D

Too bad I quit.......well, you know. ;)

[kludge]

Scale #1 is a ~$1500 Ohaus Brainweigh B100 milligram scale. I do not have any check weights accurate enough to calibrate this scale, but I checked the set I have, and used the "best" one for reference only. Repeatability was beyond what is necessary for reloading, 0.002g or less -- it takes ~0.003g to change a grain scale by 0.05gr., which is what you would need for a scale with a resolution of 0.1gr to change the reading. 1gr=64.79891mg I rounded the calculations below to the nearest 0.01gr (the raw data is in the first column), so for the light stuff you have the right number of significant digits, I think.

Scale #2 is a $6.99 special (~$25) that is 50 x 0.01g, with built in conversions. It was noticed that, probably due to the conversion, it would sometimes skip 0.1gr. This scale was purchased just for this test, and for $7 it performs just as well as the Lyman, at least for measuring powder, which is 90% of what I use it for... Because of the speed, I will probably start using this scale somewhat. Repeatability was fair, never more than +/-0.2gr and after repeated measurements, I wrote down the one that came up most frequently, but really, it would always say the same thing 7/10 times.

Scale #3 is a Lyman Pro 505 beam balance. I don't like it much as it is a bit hard to work with and is not heavy enough to "stay put". Repeatability was excellent.

Based on what I see here, there no reason why I shouldn't just order up a scale like helg... pretty impressive.

Now for the data...

http://i7.photobucket.com/albums/y266/84kludge/scaledata.jpg


So whose next? Send me a PM.

[kludge]

How does this prove your NEVA scale is right?

Or anyone else's scale is wrong?

Seems like a Certified Check Weight set would be the only thing to use.

rc


Hence the lab grade Ohaus scale in my test... Now if I could just get my hands on a check weight that exceeds the resolution of the scale. :) Oh well, too late now. One of my cheap check weights came in at 10.008g and one came in at 1.000g, the rest were within 0.1g, and I doubt the ones that you can order from RCBS or whatever for ~$20 are any better.

A real check weight set good enough for the Ohaus would run ~$700.

So in the end, perhaps I've not proved much, but I bet helg has a warm fuzzy about his scale now.

[jinxer3006]

Kludge--

I don't understand your chart--how was the "winner" determined?

[Walkalong]

perhaps I've not proved much, but I bet helg has a warm fuzzy about his scale nowYep, it did well.

We could just keep mailing the test pieces from THR member to THR member to .......... :D

[helg]

.008 grams error out of 10 grams (.08%) on a spring (not a balance) scale? It is perfect for the measurement method. Scale has to be recalibrated with test weight at the place of measurement to obtain better accuracy.

Earth gravity on sea level at US latitudes increases by .01% when moving to the North by one degree of latitude (which is about 70 miles). See e.g. there (http://geophysics.ou.edu/solid_earth/notes/potential/igf.htm). The observed .08% difference appears if the scale is calibrated just 560 miles to the South. If a spring scale is calibrated in Houston, then it will measure in Kansas, which is about that far to the North, 10 grams weight with 10.008.

[ants]

I don't see the method of analysis, but the data table is interesting.

For the purpose of weighing powder from 3 grains to 60 grains, all the scales worked great. In fact, any decent scale in good condition can work well if you're consistent and methodical.

The big variable is the user. Especially how the user treats the equipment, and the environment in which it is used. You have to be consistent in your methodology if you want consistent results.

[kludge]

Kludge--

I don't understand your chart--how was the "winner" determined?

I compared the reading from the Lyman 505 and the Fast Weigh. The "winner" was the one closest to the reading the Ohaus gave me, not counting hundreths of a grain, which neither scale can resolve.

I included helg's data for completeness.

Who want the weights next? PM me.