Features:* This refractometer is design according to the principle that different concentrations liquid have different refractive index ，with quick and accurate characteristics.* Aluminum construction heavy-duty and Light weight， small volume， convenient to carry.* Soft silicone handle provides good touching feeling.* High definition eyepiece give your a broader view and make your can read more accurately.* Complete with a soft sponge protective carrying case， a pipette and a mini-screwdriver for easy calibration.* Widely use to test Juices， Beverages， Honey， Alcohol and Grape， Antifreeze and Industrial fluids and Milk etc.Specifications:Measuring Range : w/w 0-40% Minimum Divisions : w/w 1% Accuracy : ��1% Length : 15.3CMWeight: 90G Heavy duty (Durable Aluminum)Package Included:1 x Alcohol Test Refractometer1 x Pipette 1 x Wipe Cloth1 x Mini Screwdriver 1 x Protective Carrying Case 1 x Operations Manual