Review on Circrane Hydrometer and Glass Test Jar Set: Ultimate Triple Scale Alcohol Hydrometer and Glass Cylinder for Brewing Beer, Wine, Mead, and Kombucha - ABV, Brix, Gravity Test Kit - Home Brewing Supplies by Scott Channell

Can't tell if the accuracy is great or not. It took me a while to figure out how to read it (I just wrote down the numbers with pictures until I could) and I think I'd rather get another device that has the numbers further apart lie so that I can judge where the level is if necessary be more precise. For the general idea, however, this one is pretty good. It has a nice plastic storage box with foam pads for the included hydrometer, and the glass measuring tube isn't too flimsy, although it looks like it's about to break. if you are not careful. It was slightly dented from washing and transporting it between the sink and my mead station, and both are still intact. The hydrometer will probably be the first thing I accidentally break since it's a very thin glass. I try to be careful with this, but I have a backup just in case.