Designed To Measure Sugar Content. Just A Few Sample Drops Are Enough To Determine The Percentage Of Dissolved Solid, According To The Principle For Which The Refraction Index Of A Solid Dissolved Is Proportionate To Its Concentration. This Is A Simple And Accurate Method, Extremely Useful For Controlling The Quality Of Fruit, Jam, Vegetables, Tomatoes, Beet Sugar, Canned Foods, Etc., In The Field Or In The Factory. This New Revolutionary Instrument Allows To Measure Without Problems Due To Temp. Changes, Eliminating The Inconvenient Of Temperature Compensation. Until Now Indispensable For Refractometric Measuring Operations