Widely used by home brewer, wine and cider makers Equipped with anti-slip handle and high definition prism, convenient to use Made out of aircraft aluminum, which is corrosion resistant and oxidation resistant Clean your instrument after getting the readings for long-term health and accuracy of your refractometer ATC technology (Automatic Temperature Compensation) helps it to adjust to different temperature ranges without having to calibrate it each time, ensuring accurate readings, Manufacturer: KOGEDSS