This lightweight handheld 3-in-1 optical refractometer features a clear 0–44 Brix measuring scale, specially engineered for home brewers, winemakers and fruit farmers to test grape juice, wort, cider and fresh fruit liquids. Built-in ATC automatic temperature compensation eliminates reading errors caused by ambient temperature shifts, delivering stable, consistent data without manual calibration.

Made of corrosion-resistant aluminum alloy with anti-slip rubber grip, it supports one-handed outdoor sampling. Just drip tiny liquid on the high-transmittance prism, close the cover plate and read precise values under natural light; no batteries or extra chemicals needed. Its triple functional scales cover sugar concentration, brewing gravity and fermentation reference data to monitor whole wine and beer making processes.

Compact and pocket-friendly for vineyards, microbreweries and beverage workshops. The complete package includes a dropper, calibration screwdriver and shockproof storage case to protect optical lenses from scratches and collision during transport and daily storage.