Handheld portable refractometer for salinity (0 to 100%) and specific gravity (1.000 to 1.070 ATC) measurement of seawater used in rinsing seafood or salt in cooking. Automatic temperature compensation (ATC) for immediate and accurate readings, regardless of ambient temperature. Ridged outer shell with a telescope-shaped, streamlined design (20.7 x 3.2 x 3.4cm) for gripping, and a spoon-shaped tip for smooth sampling. Polybutylene terephthalate (PBT) plastic body for use with salty and acidic sa