Product Details
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American Weigh Gemini-20 Portable Milligram Scale, 20 by 0.001 G
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| List Price: | $49.95 |
| Price: | $21.86 & eligible for FREE Super Saver Shipping on orders over $25. Details |
Availability: Usually ships in 24 hours
Ships from and sold by River Road
6 new or used available from $21.88
Average customer review:
(93 customer reviews)
Product Description
The new Gemini-20 milligram scale offers a 1 milligram readability with a 20g capacity. The removable stainless steel weighing platform makes removing samples easy. Great for weighing precious gems and other valuables. Includes case with weight. All scales backed by our 10 year warranty.Product Details
- Amazon Sales Rank: #384 in Kitchen & Housewares
- Brand: American Weigh
- Model: GEMINI-20
- Dimensions: 1.62" h x 6.50" w x 4.94" l,
Features
- Weighs up to 20 grams in 0.001 gram increments
- Includes carrying case with tweezers, tray and calibration weight
- The flip-down shield protects the delicate weighing surface
- Powered by 2 AAA batteries (included)
- Backed by a powerful 10 year warranty
Customer Reviews
Most helpful customer reviews47 of 49 people found the following review helpful.
With a little care, this scale is quite repeatable and a great valueBy rbruning
I needed a scale that could measure quantities less than 10mg and did not want to buy a $1500 piece of lab equipment. If you are careful and consistent with your measuring techniques, this scale is repeatable to within a few milligrams - often to its finest resolution of 0.001g. These are essential for this performance: 1) let the scale stabilize on a hard, flat and level surface. 2) Make sure the sample tray is properly seated inside the circular detent of the scale's metal measuring platform. If you're not careful, the sample tray (as provided) can touch the body of the scale, grossly throwing off the measurement. I glued a small piece of metal to the bottom of the sample tray raising it higher for more clearance. I'll often tap the table that the scale is on to help everything settle. 3) calibrate as described in the manual. 4) place and remove samples consistently and carefully - don't drop them. Even the slightest impact can throw off the measurement. 5) wait for ten seconds or so for the sample to settle. 6) for minuscule samples, use the ten gram weight in addition to the sample to put the scale in the middle of its operating range. With a little care, one will get closer to the performance of a lab-grade milligram scale than anything else for this price. Nice scale.
19 of 19 people found the following review helpful.
Amazing instrument, amazing priceBy photo buff
I'm amazed that you get a balance which can display to the nearest milligram for the price that I would expect to pay just for the two calibration weights, which are included. Unless you've had a course in analytical chemistry or work in a lab where precision weighings are routine, here are a few tips. Do keep in mind that it is a precision instrument - use a light touch adding weight to the pan, always use the tweezers -- do not touch the pan or weights with your bare fingers. Keep the balance in a clean environment away from fumes, and only use it on a solid vibration free surface. For precise weightings to the nearest milligram, don't lean on the table, which must be solid, level, and vibration free. This balance is a little gem and an incredible bargain.
27 of 29 people found the following review helpful.
Accurate and affordable scaleBy R. Schwartz
I was hesitant to buy this given the review indicating that there may be a problem with the power supply to this scale. However, I was hoping that the other reviewer's case may have been isolated given the vast number of scales that AWS offered.
I've been using mine for about two weeks, making sure to turn it on and weigh the calibration weight at least once a day to check a) the power to the scale, and b) the accuracy of the scale over a period of time checking for consistency.
I can say that mine doesn't have an issue with eating away at the batteries and the scale is always within a 3mg error range of the 10g weight (usually less). I would say given the cost, that it is an extremely accurate and affordable scale.
See all 93 customer reviews...
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