I'm almost positive it's the same one I have, and I'm pretty pleased with it (bought another @ that price). I check the calibration before each brew day, and since some refractometers are notorious for giving inconsistent readings from a given sample, I take multiple readings from any sample I take. Gotta say, it's pretty consistent . I love it. But as previously posted, I use it for pre-fermentation readings and a hydrometer for FG.