Description: Measurement Range: w/w 0-10% Minimum Unit: w / w 1‰ Accuracy: ±1‰ Length: 18CM Heavy Duty (Durable Aluminum) 100% Brand New and High Quality Garage Workshops, Metal Workers, Builders, Automotive Mechanics, Spray Painters, DIY Professional Metal Spraying Parts and Surface Cleaning 10cm Spare Nozzle Included Dimensions: 145mm x 8mm 5mm x 12 mm(L x W x H) (approx.) This refractometer is designed with the principle of having different concentrations of liquids having different refractive index and has quick and accurate characteristics. Automatic temperature compensation, water sample temperature will not affect reading. Package included: 1 x Test Salinometer 1 x Pipette 1 x Wipe Cloth 1 x Mini Screwdriver 1 x Protective Case 1 x Operation Manual