Dual scale refractometer with ATC (Automatic Temperature Compensation).  Measures 0 to 32% Brix and 1.000 to 1.120 Gravity.

For me, getting a refractometer was one of those upgrades that made a lot of difference.  With a refractometer you need a sample size of two drops.  I figured that this would pay for itself in beer savings alone.  I also had just broken my hydrometer and came to the realization that hydrometers are made of breakable glass that can break! 🙂

With the aid of calculators – get a Free Non-Expiring Brewfather Trial Account –  Refractometers can be used to measure gravity throughout the brewing process.

Update: Since this post was published the price, availability or promotion has changed.  Check the product page for current description, price and availability.  Also: Today’s Deals on Amazon

BDJK Beer Wort and Wine Refractometer, Dual Scale 0~32%Brix, 1.000~1.120 Gravity

Also: Yeast Starters & Fermentation | StirStarter Stir Plate | Yeast: The Practical Guide to Beer Fermentation

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