MHC 854-4055 Refractrometer RHB-55, Range 0-55%, Grad. 1%, without ATCMeasure the concentration of Sugar, Salt, Lubricants, Antifreeze, Cutting Fluids & more Easy to operate refractometers provide accurate and repeatable measurements on easy to read scales Automatic temperature compensation models available for sugar, salt, lubricants, cutting fluids, and antifreeze Requires only 2 or 3 drops of solution The prism and lens with a simple focus adjustment provides repeatable results Complete with case, calibration