Portable Handheld ATC Salinometer Seawater Salinity Refractometer with 0-100% Measuring Range 1.00-1.07 Specific Gravity The salinometer can be used for measuring the seawater(marine aquarium) or very low concentrated salt solutions, which measuring rang is 0-100% and specific gravity is 1.00-1.07.Features:Handheld design and non-slip rubber handle for easy operation.Built-in automatic temperature compensation(ATC) to get faster results.Measuring Rang: 0-100%; Specific Gravity: 1.00-1.07.With measurement level for direct reading.Adjustable manual focus, easy to focus and calibrate.Comes with a case, convenient for storage and portable for use.Specifications:Color: Black + Silver + BlueMaterial: ABSMeasuring Range: 0-100%Specific Gravity: 1.00-1.07Item Size: Approx. 19 * 4cm / 7.5 * 1.6inItem Weight: Approx. 101g / 3.6ozPackage Weight: Approx. 244g / 8.6ozPackage Size: Approx. 20.3 * 8 * 5.5cm / 8 * 3.1 * 2.2inPackage List:1 * Salinity Refractometer1 * Slotted Screwdriver1 * Cleaning Cloth1 * Straw1 * Case1 * User Manual(English)