Calibrated with distilled used conversion in beer smith was extremely accurate (UN-fermented)

Works great... easy to read

Replaces one I broke. It is just like the original.

Even with my poor vision I can read the scales. Easy to read and agrees with my hydrometer (1.050 range). Convenient to use after mashing to see if I hit my OG targets. Will start to use in the vineyard soon as well.

So much easier and less fragile than a S.G. meter.

This unit was super easy to calibrate and is amazingly easy to use. It has simplified my brew day as readings don't require thieving nearly as much liquid.

Easy to use, accurate, doesn't waste your beer.

Picked this up after trying to use a thief and hydrometer for gravity measurements. This is so much easier, I can imagine using my hydrometer over it ever again. Requires just a few drops to get a measurement, and since it is such a small volume, the temperature of the sample will cool to room temperature very quickly. The dual scale is very easy to read and comes in handy to know both Brix and SG for the OG and to make corrections for EtOH during/after fermentation. Easy to calibrate with a set screw on the unit and a few drops of distilled water.

The price was right and I like the dual scale feature.

Great. Easy to use. Easy to clean

Works as expected, very easy to use.

Great deal on a nice refractometer. Only takes a few drops of wort vs a 1/2 cup or so with a hydrometer. Same reading as with the hydrometer, but much easier and faster.

Works great. Lines are easier to read than my old refractometer. Love the SG scale is independent of the brix one.

Seems to work well. Just recently got it so it’s accuracy hasn’t been repeatedly tested against my hydrometer. It gets 4 stars instead of 5 because although it focuses well I wear glasses & with the distance from my eye only a portion of the lens is clearly focused- blurry around the edges, making it difficult to read the numbers. And without my glasses, with the instrument right up to my eye, the adjustment doesn’t turn far enough to bring it into focus. It is still usable but this is a big drawback for someone reliant on glasses with strong corrective lenses.

Easy to read with proper lighting. I like the dual scale with both brix and gravity saves me from having to calculate one or the other.

Fantastic tool to have. A bit of a learning curve. Didn't know you had to adjust alcohol in fermented wort. Found the tool on BeerSmith to calculate the adjustment. Works like a charm

Can't get any better than this. Easy to read, durable, dependable and accurate. I use it in the field and in the shop regularly and check it against other instruments occasionally and do the math. Had it for four seasons now and still ticking. Will buy another when it passes.

Quick gravity readings without taking a big sample. I haven't touch my hydrometer in years.

works well but wish the instructions mentioned that you cant use it for post fermentation. I probably would not have bought it had I known.

This handy tool is great for checking your pre-boil gravity after sparging. It is accurate as long as you read the instructions and calibrate it properly. Re-calibrate from time to time to be safe. The first time I used it (after calibrating) I compared the refractometer reading with a hydrometer reading and they were identical!

I really like this dual scale. T'was always a bit of a pain to have to do the conversion.

After a few years of owning and using this I've found it's great to use a smaller sampler to find the data you're liking for, but I have also found this to not be very accurate and getting different numbers from same batch even same small sampling.I'll check with h2o between samples and the water will be accurate. So in the end just take the bad with the good. It's reasonably priced, easy to use, just sometimes it's not very accurate.

I was hesitant buying this as many of the reviews regarded the inaccuracy but I have tested it several times against my hydrometer and it has been +/- no more than .002 every time. This is a MUST HAVE if you are making the step up to all grain.Side tip, this are great to use when making a starter as well! No more guessing at your ratios.

Good price for a dual scale refractometer, holds calibration well and reads accurately. Overall construction is good, and the fitted case is a nice touch for protection. Easy to read with a bright light source, can even take photos of readings with my cell phone camera.

I purchased this while splurging on a large order. I had never used one prior to purchasing and was taking a leap of faith on this product. After brewing I took a reading and it was VERY accurate. Then I got carried away and took a reading of basic house water and the beer I was drinking, both were completely accurate. This method was extremely easy and allows me to take a reading and not have to pour out beer. Love it!

I love this product. Makes it very easy to read wort gravity in both SG and Brix scale. Four drops of wort and you have your reading. No need to take a big sample for hydrometer test and temperature compensation. Just make sure it's well calibrated from time to time.

This is a nice, easy to use refractometer. The scale is fairly easy to read, given that it has to fit all that information in such a small area. Very easy to calibrate, and reliable although I'm still doing hydrometer samples until I feel totally comfortable with it. You do have do calibrate before each brew, but it's very easy to take samples thru out the brew and into the fermentation.

This Refractometer is so useful and what a difference in accuracy and my ability to read it. Bravo

Refractometers are very useful but I will look for a different manufacturer next time.

Great tool, I don't know what I would do with out it, and it's easy to read

This is an easy upgrade to your standard hydrometer, and you do not waste any precious wort. I rarely use my hydrometer anymore, except for occasional spot checks. Fantastic product!

I made sure to dial it in correctly, but still checked the first few batches with my hydrometer. Some readings sometimes are off though so I just take another. I think the issue was when I added water to bring my batch back up to 5 gallons it was not mixed in evenly.