My VERY exciting newp!!!

EVillageProwler

I ordered it a few days ago via Amazon, and expecting it to arrive Monday. Arrived today!!! Thanks to OriginalDan for suggesting that I get this:

scale (200x.01 grams), 200 + 100 gram calibration weights, and a scale calibration weight kit (1 by 50g, 2 by 20g, 1 by 10g, 1 by 5g, 1 by 2g, 1 by 1g).

Everything by American Weigh Scales.

JCMhouston

Very cool, should be able to have hours of fun weighing ancients with that!

EVillageProwler

Or Anglo-Saxon hammered pieces, or just about any coin that I don't intend to slab (like my four Italian States double crown pieces). I'm having a problem getting the scale to be calibrated enough (to the 1/100g), but that is to be expected for my model (with an acceptable tolerance rating of 0.02g). I wanted a scale that can handle up to a 6-taler as well as down to a teeny tiny sceat. But, there is no single device to handle that that well, so I settled for a 200x.01g range in a single device knowing that I'd have to weigh my sceattas and pennies more than once (per coin) and see if the value converges. (I didn't want two separate devices.)

EVillageProwler

My first results, from my five raw 2T-sized silver pieces: 68.58 (30 Tari, Sicily), 68.17 (30 Tari, Sicily), 77.51 (2 Scudi, Genoa), 76.46 (2 Scudi, Genoa), 50.83 (2 Taler, Basel). Four of the five are AU or better. The fifth (the heaviest of the group) is ChEF. So much for consistency, huh!

pruebas

A serious numismatist will eventually need to compute specific gravity at some point. One needs to make sure their scale has a means of attaching a specific gravity kit (often a hook for suspending the weighed object below the weigh pan).



Secondly, the most important component in any electronic scale is the weigh transducer. Most Chinese scales (actually, all I have seen) scrimp in this area.



Just because a scale can display to 0.01 doesn't mean it's accurate to that. (Remember "significant digits" in school?)



For home use, a good American or German-made scale is best and can be had for $300-400 (less than one good coin). For show use, a portable Japanese jewelry scale (Tanita) can be had for around $100.

EVillageProwler

Pruebas - too complicated, too expensive. My entire set cost less than $60.

brg5658

Originally posted by: pruebas

A serious numismatist will eventually need to compute specific gravity at some point. One needs to make sure their scale has a means of attaching a specific gravity kit (often a hook for suspending the weighed object below the weigh pan).



Secondly, the most important component in any electronic scale is the weigh transducer. Most Chinese scales (actually, all I have seen) scrimp in this area.



Just because a scale can display to 0.01 doesn't mean it's accurate to that. (Remember "significant digits" in school?)



For home use, a good American or German-made scale is best and can be had for $300-400 (less than one good coin). For show use, a portable Japanese jewelry scale (Tanita) can be had for around $100.

My $50 Chinese made scale is plenty accurate for what I need it for. And, I do trust it is accurate to 0.01 grams. Copper USA cents weigh 3.11 grams consistently. Zincolns weigh 2.50 grams. There are enough modern coins with known and very low variance weights, that one can be quite certain if they are getting accurate measurements or not.



Nice new scale and goodies EVP.

Broadstruck

I have a balanced beam and digital scale with 2 brass calibration weights...



Not sure why you would need that complete set of different weights for calibration of a quality digital scale?

EVillageProwler

Broadstruck - this is my first exposure to this type of stuff. I didn't know I wouldn't need, yet at least, that calibration kit. And it wasn't expensive, so I didn't spend too much of my limited time researching everything too much.

Broadstruck

Originally posted by: EVillageProwler

Broadstruck - this is my first exposure to this type of stuff. I didn't know I wouldn't need, yet at least, that calibration kit. And it wasn't expensive, so I didn't spend too much of my limited time researching everything too much.

Good to hear they weren't expensive as once your scale is calibrated unless you travel with it or change batteries you'll never need them.

amwldcoin

Remember the old triple beam scales from your High School days?(Assuming you are close to my age ) I have been using 1 for years and am quite pleased with it. Weighs up to 2610 grams. Very accurate, easy to calibrate, and easy to extrapolate down to nearly 1/100 of a gram.

EVillageProwler

Originally posted by: amwldcoin
Remember the old triple beam scales from your High School days?(Assuming you are close to my age ) I have been using 1 for years and am quite pleased with it. Weighs up to 2610 grams. Very accurate, easy to calibrate, and easy to extrapolate down to nearly 1/100 of a gram.

Do you mean this? That's too big and heavy. Mine is portable, useful for my more illicit activities.

Aethelred

Nice set!

OriginalDan

Originally posted by: EVillageProwler

Do you mean this? That's too big and heavy. Mine is portable, useful for my more illicit activities.

It all makes sense now. I was so puzzled when you said you needed a scale for your "dimes".

EVillageProwler

OD: I have no idea what you're talking about.

TwoKopeiki

Congrats on a nice scale. Speaking of Ohaus triple beam one - that's what I use for specific gravity.

amwldcoin

Remember the old triple beam scales from your High School days?(Assuming you are close to my age ) I have been using 1 for years and am quite pleased with it. Weighs up to 2610 grams. Very accurate, easy to calibrate, and easy to extrapolate down to nearly 1/100 of a gram.



Do you mean this? That's too big and heavy. Mine is portable, useful for my more illicit activities.



https://www.sks-science.com/images/OHAU-1650W0LRG.jpg">





Good comeback! Mine is like that but older. Has a slide instead of the dial for grams.

PatAR

I use the same scale as my portable scale at shows. Properly calibrated I've found it to be reasonably accurate (within the calibrated range) and quite reliable. It should serve you well. I do use a more expensive scale for SG, primarily due to the size of the pan.